ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FEATURES AND BENEFITS
• High operating bandwidth for fast control loops or where
high-speed currents are monitored
□ 400 kHz bandwidth
□ 1.1 µs typical response time
• High accuracy
□ 1% maximum sensitivity error over temperature (K series)
□ 8 mV maximum offset voltage over temperature
□ Non-ratiometric operation with VREF output
□ Low noise LA package
◊ 160 mVRMS for 3.3 V supply
◊ 124 mVRMS for 5 V supply
□ Differential sensing for high immunity to external
magnetic fields
□ No magnetic hysteresis
• Adjustable fast overcurrent fault
□ 1 µs typical response time
□ Pin adjustable threshold
• Externally configurable gain settings using two logic pins
□ Four adjustable gain levels for increased design
flexibility
Continued on the next page…
PACKAGE:
16-Pin SOICW (suffix MA/LA)
DESCRIPTION
The ACS37002 is a fully integrated Hall-effect current sensor in
an SOICW-16 package that is factory-trimmed to provide high
accuracy over the entire operating range without the need for
customer programming. The current is sensed differentially by
two Hall plates that subtract out interfering external commonmode magnetic fields.
The package construction provides high isolation by magnetically
coupling the field generated by the current in the conductor to the
monolithic Hall sensor IC which has no physical connection to
the integrated current conductor. The MA package is optimized
for higher isolation with dielectric withstand voltage, 3125 VRMS,
and 0.85 mΩ conductor resistance. The LA package is optimized
for lower noise with 2250 VRMS dielectric withstand voltage
and 1 mΩ conductor resistance.
The ACS37002 has functional features that are externally
configurable and robust without the need for programming.
Two logic gain selection pins can be used to configure the
device to one of four defined sensitivities and corresponding
current ranges. A fast overcurrent fault output provides shortcircuit detection for system protection with a fault threshold
that is proportional to the current range and can be set with an
analog input. The reference pin provides a stable voltage that
corresponds to the 0 A output voltage. This reference voltage
allows for differential measurements as well as a device-referred
voltage to set the overcurrent fault threshold.
Devices are RoHS compliant and lead (Pb) free with 100%
matte-tin-platted leadframes.
Not to scale
ACS37002
1
2
3
4
IP
5
6
7
8
IP+
GAIN_SEL_0
IP+
GND
IP+
GAIN_SEL_1
IP+
VREF
IP-
VIOUT
IP-
VOC
IP-
VCC
IP-
OCF
VCC
16
MCU
15
RPU
14
VCC
13
ADC
12
11
10
VCC
CREF
9
CL
ADC
GND
Digital I/O
CBYPASS
RVOC(H)
CVOC
RVOC(L)
Figure 1: Typical Bidirectional Application Showing 00 Gain Select Configuration.
For more application circuits, refer to the Application and Theory section.
ACS37002-DS, Rev. 7
MCO-0000900
November 10, 2021
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FEATURES AND BENEFITS (continued)
•
•
•
•
ACS
37002 K MAB TR - 050 B
□ Enabling measurement ranges from 10 to 133 A in both
unidirectional and bidirectional modes
Low internal primary conductor resistance 0.85 mΩ (MA) and
1 mΩ (LA) for better power efficiency
UL 62368-1:2014 (ed. 2) certification, highly isolated compact
SOICW-16 surface mount package (MA)
□ 3125 VRMS rated dielectric withstand voltage
□ 1097 VRMS / 1550 VDC basic insulation voltages
□ 565 VRMS / 800 VDC reinforced insulation voltages
Wide operating temperature, –40°C to 150°C
AEC-Q100 Grade 0, automotive qualified
5 - M
UVD Disabled
Supply Voltage:
5 – VCC = 5 V
3 – VCC = 3.3 V
Output Directionality:
B – Bidirectional
U – Unidirectional
Current Sensing Range (A)
Packing Designator
Package Designator
Optimized Temperature Range
L – -40°C to 150°C
K – -40°C to 125°C
MA Only
5 Digit Part Number
Allegro Current Sensor
CB Certificate number:
US-32210-M3-UL
US-36315-UL
SELECTION GUIDE
Part Number
Current Sensing
Range, IPR (A)
ACS37002LMABTR-050B5-M
±33, ±40, ±50, ±66
ACS37002LMABTR-066B5-M
±66, ±80 ±100, ±133
30, 25, 20, 15
ACS37002LMABTR-050U5-M
33, 40, 50, 66
120, 100, 80, 60
Sensitivity [1]
(mV/A)
Nominal VCC
(V)
Optimized
Temp. Range
TA (°C)
Packing [2]
MA Package, 16-Pin SOICW
60, 50, 40, 30
ACS37002LMABTR-066U5-M
66, 80, 100, 133
60, 50, 40, 30
ACS37002LMABTR-050B3
±33, ±40, ±50, ±66
39.6, 33, 26.4, 19.8
ACS37002LMABTR-066B3
±66, ±80, ±100, ±133
19.8, 16.5, 13.2, 9.9
ACS37002LMABTR-050U3
33, 40, 50, 66
79.2, 66, 52.8, 39.6
39.6, 33, 26.4, 19.8
5
–40 to 150
3.3
ACS37002LMABTR-066U3
66, 80, 100, 133
ACS37002KMABTR-050B5-M
±33, ±40, ±50, ±66
60, 50, 40, 30
5
ACS37002KMABTR-050B3
±33, ±40, ±50, ±66
39.6, 33, 26.4, 19.8
3.3
ACS37002LLAATR-015B5
±10, ±12, ±15, ±20
200,166.6,133.3,100
ACS37002LLAATR-025B5
±25, ±30, ±37.5, ±50
80, 66.6, 53.3, 40
ACS37002LLAATR-015B3
±10, ±12, ±15, ±20
132, 110, 88, 66
ACS37002LLAATR-025U3
25, 30, 37.5, 50
105.6, 88, 70.4, 52.8
1000 pieces
per 13-inch reel
–40 to 125 [3]
LA Package, 16-Pin SOICW
5
–40 to 150
3.3
1000 pieces
per 13-inch reel
Refer to the part specific performance characteristics sections for Gain_Sel configuration.
Contact Allegro for additional options.
[3] The device performance is optimized from –40°C to 125°C; however, the device can still operate to an ambient temperature of 150°C. The device shares the same
qualifications as the L temperature devices unless otherwise stated.
[1]
[2]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Table of Contents
Features and Benefits............................................................ 1
Description........................................................................... 1
Packages............................................................................. 1
Selection Guide.................................................................... 2
Absolute Maximum Ratings.................................................... 4
Isolation and Package Characteristics..................................... 5
MA Package Specific Performance.......................................... 5
LA Package Specific Performance........................................... 5
Pinout Diagram and Terminal List............................................ 6
Functional Block Diagram...................................................... 7
Common Electrical Characteristics.......................................... 8
Performance Characteristics..................................................11
Functional Description......................................................... 25
Power-On Reset Operation............................................... 25
Power-On/Power-Off.................................................... 25
Overvoltage Detection (OVD)........................................ 26
Absolute Maximum Ratings............................................... 27
Supply Zener Clamp Voltages........................................ 27
Forward and Reverse Supply Voltage............................. 27
Forward and Reverse Output Voltage............................. 27
Forward and Reverse Reference/Fault Voltage................ 27
Output Source and Sink Current..................................... 27
Definitions of Operating and Performance Characteristics........ 28
Zero Current Voltage Output (VIOUT(Q), QVO)...................... 28
QVO Temperature Drift (VQE)............................................ 28
Reference Voltage (VREF)................................................. 28
Reference Voltage Temperature Drift (VRE)........................ 28
Offset Voltage (VOE)........................................................ 28
Output Saturation Voltage (VSAT(HIGH/LOW)).......................... 28
Output Voltage Operating Range (VOOR)............................. 28
Sensitivity (Sens)............................................................. 29
Sensitivity Error (Esens)..................................................... 29
Gain Selection Pins.......................................................... 29
Full Scale (FS)................................................................. 29
Nonlinearity (ELIN)............................................................ 29
Total Output Error (ETOT)................................................... 30
Power Supply Offset Error (VPS)........................................ 30
Offset Power Supply Rejection Ratio (PSRRO).................... 30
Power Supply Sensitivity Error (EPS)................................. 30
Sensitivity Power Supply Rejection Ratio (PSRRS).............. 30
Fault Behavior.................................................................... 31
Overcurrent Fault (OCF)................................................... 31
Overcurrent Fault Operating Range/Point (IOCF-OR, IOCF-OP)...31
Overcurrent Fault Hysteresis (IOCF-Hyst)........................... 31
Voltage Overcurrent Pin (VOC)...................................... 31
Overcurrent Fault Error (EOCF)....................................... 32
Overcurrent Fault Response Time (tOCF)......................... 32
Overcurrent Fault Reaction Time (tOCF-R)........................ 32
Overcurrent Fault Mask Time (tOCF-MASK)........................ 32
Overcurrent Fault Hold Time (tOCF-HOLD)......................... 32
Overcurrent Fault Persist............................................... 32
OCF Disable................................................................ 32
Response Characteristics Definitions and Performance Data.... 33
Response Time (tRESPONSE).............................................. 33
Propagation Time (tpd)...................................................... 33
Rise Time (tR).................................................................. 33
Output Slew Rate (SR)..................................................... 33
Temperature Compensation.............................................. 34
Temperature Compensation Update Rate........................... 34
Application and Theory........................................................ 35
Application Circuits.......................................................... 35
Theory and Functionality – VOC and OCF.......................... 36
VOC Driven by Non-Inverting Buffered VREF.................. 36
Power Supply Decoupling Capacitor and
Output Capacitive Loads............................................. 36
Dynamically Change Gain in a System............................... 37
Thermal Performance.......................................................... 38
Thermal Rise vs. Primary Current...................................... 38
Evaluation Board Layout .................................................. 38
Package Outline Drawings................................................... 39
MA Package.................................................................... 39
LA Package..................................................................... 40
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
3
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ABSOLUTE MAXIMUM RATINGS
Characteristic
Forward Supply Voltage
Symbol
Notes
VFCC
Reverse Supply Voltage
VRCC
Forward Output Voltage
VFIOUT
Applies to VIOUT, VOCF, and VREF
Reverse Output Voltage
VRIOUT
Applies to VIOUT, VOCF, and VREF
Rating
Unit
6.5
V
–0.5
V
(VCC + 0.7) ≤ 6.5
V
–0.5
V
Forward Input Voltage
VFI
Applies to GAIN_SEL0, GAIN_SEL1, and VOC
(VCC + 0.7) ≤ 6.5
V
Reverse Input Voltage
VRI
Applies to GAIN_SEL0, GAIN_SEL1, and VOC
Maximum Continuous Current [1]
ICMAX
TA = 25°C
–0.5
V
MA package
60
A
LA package
55
A
Operating Ambient Temperature
TA
–40 to 150
°C
Storage Temperature
Tstg
–65 to 165
°C
TJ(max)
165
°C
Maximum Junction Temperature
[1] Tested
on the ASEK37002 Evaluation Board (TED-0002825).
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
4
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ISOLATION AND PACKAGE CHARACTERISTICS
Characteristic
Symbol
Notes
Dielectric Surge Voltage
VSURGE
Tested in oil, ±5 pulses at 2/minute in compliance to IEC 61000-4-5
1.2 µs (rise) / 50 µs (width)
Surge Current [1]
ISURGE
Tested in compliance to IEC 61000-4-5
8 µs (rise) / 20 µs (width)
Comparative Track Index
CTI
Material Group II
Moisture Sensitivity Level
MSL
Per IPC/JEDEC J-STD-020
[1] Certification
Rating
Unit
10
kV
13
kA
400 to 599
V
3
–
Rating
Unit
pending.
MA PACKAGE SPECIFIC PERFORMANCE
Characteristic
Symbol
Notes
Distance Through Insulation
DTI
Minimum internal distance through insulation
90
µm
Dielectric Withstand Voltage
VISO
Agency rated for 60 seconds per UL 62368-1:2014 (edition 2) [1][2]
3125
VRMS
VIMPULSE
Tested in air, ±5 pulses at 2/minute in compliance to IEC 61000-4-5
1.2 µs (rise) / 50 µs (width)
6000
VPK
VWVBI
Maximum approved working voltage for basic insulation according
to UL 62368-1:2014 (edition 2)
1550
VPK or VDC
1097
VRMS
Maximum approved working voltage for reinforced insulation
according to UL 62368-1:2014 (edition 2)
800
VPK or VDC
Impulse Withstand Voltage
Working Voltage for Basic Insulation
Working Voltage for Reinforced
Insulation
VWVRI
565
VRMS
Clearance
Dcl
Minimum distance through air from IP leads to signal leads
7.9
mm
Creepage
Dcr
Minimum distance along package body from IP leads to signal leads
7.9
mm
Rating
Unit
45
µm
2250
VRMS
4000
VPK
tested for 1 second at 3125 VRMS per UL 62368-1 (edition 2).
type-tested at 5000 V for 1 minute per UL 62368-1 (edition 2) Section 5.4.7.
[1] Production
[2] Agency
LA PACKAGE SPECIFIC PERFORMANCE
Characteristic
Symbol
Notes
Distance Through Insulation
DTI
Minimum internal distance through insulation
Dielectric Withstand Voltage
VISO
Agency rated for 60 seconds per UL 62368-1:2014 (edition 2)
Impulse Withstand Voltage
Working Voltage for Basic Insulation
[3]
[1][2]
VIMPULSE
Tested in air, ±5 pulses at 2/minute in compliance to IEC 61000-4-5
1.2 µs (rise) / 50 µs (width)
VWVBI
Maximum approved working voltage for basic insulation according
to UL 62368-1:2014 (edition 2)
870
VPK or VDC
616
VRMS
Clearance [3]
Dcl
Minimum distance through air from IP leads to signal leads
7.5
mm
Creepage [3]
Dcr
Minimum distance along package body from IP leads to signal leads
7.5
mm
tested for 1 second at 2250 VRMS per UL 62368-1 (edition 2).
type-tested at 3600 V for 1 minute per UL 62368-1 (edition 2) Section 5.4.7.
[3] Certification pending.
[1] Production
[2] Agency
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
5
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
PINOUT DIAGRAM AND TERMINAL LIST TABLE
IP+ 1
16 GAIN_SEL_0
IP+ 2
15 GND
IP+ 3
14 GAIN_SEL_1
IP+ 4
13 VREF
IP-
5
12 VIOUT
IP-
6
11 VOC
IP-
7
10 VCC
IP-
8
9 OCF
Figure 2: MA/LA Pinout Diagram
Terminal List Table
Number
Name
1, 2, 3, 4
IP+
Terminals for current being sensed; fused internally
Description
5, 6, 7, 8
IP-
Terminals for current being sensed; fused internally
9
OCF
Overcurrent fault, open-drain
10
VCC
Device power supply terminal
11
VOC
Overcurrent fault operation point input
12
VIOUT
Analog output representing the current flowing through IP
13
VREF
Zero current voltage reference
14
GAIN_SEL_1
15
GND
16
GAIN_SEL_0
Gain selection bit 1
Device ground terminal
Gain selection bit 0
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
6
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002
Digital
Regulator
Signal Path Control
and
Temp. Control
EEPROM/
Digital Block
GAIN_SEL_1 (14)
OCF (9)
RIGS
OCF
Filtering*
GAIN_SEL_0 (16)
External Inputs
RIGS
OCF
Threshold*
VOC (11)
OCF
Comp.
VREF
Buffer
VREF (13)
External Outputs
VCC (10)
Digital
IP+ (1,2,3,4)
IP- (5,6,7,8)
Back
Amp.
Front
Amp.
Hall
plates
VIOUT (12)
GND (15)
Analog Signal Path
Digital Control
*Further information in Theory and
Application Section
Figure 3: Functional Block Diagram
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
7
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON ELECTRICAL CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Supply Voltage
Supply Current
Supply Bypass Capacitor
Symbol
VCC
ICC
CBYPASS
Test Conditions
Min.
Typ.
Max.
Units
V
5 V devices only
4.5
5
5.5
3.3 V devices only
3.15
3.3
3.6
V
–
13
18
mA
No load on VIOUT or VREF; VCC = 5 V
No load on VIOUT or VREF; VCC = 3.3 V
–
12
15
mA
VCC to GND recommended
0.1
–
–
µF
Output Resistive Load
RL
VIOUT to GND, VIOUT to VCC
10
–
–
kΩ
Output Capacitive Load
CL
VIOUT to GND
–
1
6
nF
Reference Resistive Load
RVREF
VREF to GND (recommended to supply VOC); VREF to VCC
10
–
–
kΩ
Reference Capacitive Load
CVREF
VREF to GND
–
–
6
nF
Fault Pull-Up Resistance
Primary Conductor Resistance
Primary Conductor Inductance
Output Buffer Resistance
Power-On Reset Voltage
RPU
RIP
LIP
ROUT
kΩ
–
mΩ
LA,TA = 25°C
–
1
–
mΩ
MA package
–
4.2
–
nH
LA package
–
5
–
nH
Internal output buffer resistance on VIOUT and VREF
–
4
–
Ω
2.6
2.9
3.1
V
VPOR(L)
falling [1]
2.2
2.5
2.8
V
250
–
–
mV
Time from VCC rising ≥ VPOR(H) after a POR event
until power-on; VREF, OCF, VIOUT
100
–
–
μs
VOVD(H)
TA = 25°C, VCC rising [1]
6.1
6.3
6.8
V
VOVD(L)
TA = 25°C, VCC falling [1]
5.6
5.8
6.1
V
–
660
–
mV
Power-On Time
tPOD
OVD Delay Time
500
0.85
VCC rising [1]
VPOR(HYS)
Overvoltage Detection
Hysteresis
–
–
VPOR(H)
POR Hysteresis
Overvoltage Detection (OVD)
Threshold
4.7
MA,TA = 25°C
VCC
VOVD(HYS)
tdOVD(E)
Time from VCC rising ≥ VOVD(EN) until OVD asserts
35
90
120
µs
tdOVD(D)
Time from VCC falling ≤ VOVD(DIS) until OVD clears
–
7
–
µs
Continued on the next page…
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
8
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON PERFORMANCE CHARACTERISTICS (VIOUT): Valid through full operating temperature range,
TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
OUTPUT SIGNAL CHARACTERISTICS (V IOUT)
Saturation Voltage
Output Operating Range
Output Current Limit
VSAT(H)
RL = 10 kΩ to GND
VCC – 0.25
–
–
V
VSAT(L)
RL = 10 kΩ to VCC
–
–
0.15
V
5 V linear operating range
0.5
–
4.5
V
3.3 V linear operating range
0.3
–
3.0
V
VOOR
IOUT(src)
VIOUT shorted to GND
–
25
–
mA
IOUT(snk)
VIOUT shorted to VCC
–
25
–
mA
Output Drive
IOUT
Bandwidth
BW
Rise Time
Response Time
Propagation Delay
Noise Density
Noise
Nonlinearity
Power Supply Rejection Ratio
Offset
4.8
–
–
mA
Small signal –3 dB, CL = 6 nF
–
400
–
kHz
tR
TA = 25°C, CL = 6 nF
–
0.7
2.5
µs
tRESPONSE
TA = 25°C, CL = 6 nF
–
1.1
2.5
μs
tpd
TA = 25°C, CL = 6 nF
IND
IN
–
0.7
2
μs
Input-referenced noise density;
TA = 25°C, CL = 6 nF; VCC = 5 V
MA Package
–
350
–
µA/√Hz
LA Package
–
155
–
µA/√Hz
Input-referenced noise density;
TA = 25°C, CL = 6 nF; VCC = 3.3 V
MA Package
–
450
–
µA/√Hz
LA Package
–
200
–
µA/√Hz
Input-referenced noise at 400 kHz;
TA = 25°C, CL = 6 nF; VCC = 5 V
MA Package
–
277
–
mARMS
LA Package
–
124
–
mARMS
Input-referenced noise at 400 kHz;
TA = 25°C, CL = 6 nF; VCC = 3.3 V
MA Package
–
357
–
mARMS
LA Package
–
160
–
mARMS
ELIN
PSRRO
Power Supply Rejection Ratio
Sens
PSRRS
Power Supply Offset Error
VOE(PS)
–
±0.75
–
%
TA = 25°C, DC to 1 kHz, 100 mV pk-pk ripple around VCC =
VCC(typ), IP = 0 A
–
–40
–
dB
TA = 25°C, 1 to 100 kHz, 100 mV pk-pk ripple around VCC =
VCC(typ), IP = 0 A
–
–30
–
dB
TA = 25°C, DC to 1 kHz, 100 mV pk-pk ripple around VCC =
VCC(typ), IP = IPR(MAX)
–
–15
–
dB
TA = 25°C, 1 to 100 kHz, 100 mV pk-pk ripple around VCC =
VCC(typ), IP = IPR(MAX)
–
–6
–
dB
Bidirectional; VCC @ VCC(MIN) or VCC(MAX)
Power Supply Sensitivity Error
ESENS(PS)
Common-Mode Field Rejection
CMFR
Unidirectional; VCC @ VCC(MIN) or
VCC(MAX)
–10
–
10
mV
MA Package
–18
–
18
mV
LA Package
–10
–
10
mV
–1.5
–
1.5
%
–
4
–
mA/G
VCC @ VCC(MIN) or VCC(MAX)
Input-referred error due to common-mode field
Continued on the next page…
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
9
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON PERFORMANCE CHARACTERISTICS (VREF, FAULT, GAIN_SEL): Valid through full operating
temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Bidirectional; VCC = 5 V
2.49
2.5
2.51
V
Bidirectional; VCC = 3.3 V
1.64
1.65
1.66
V
Unidirectional; VCC = 5 V
0.49
0.5
0.51
V
Unidirectional; VCC = 3.3 V
0.32
0.33
0.34
V
–
25
–
mA
REFERENCE OUTPUT CHARACTERISTICS (VREF)
VREF(BI)
Zero Current Reference Voltage
VREF(UNI)
Reference Source Current Limit
Reference Slew Rate
IREF(SRC)
Maximum current VREF can passively source
IREF(SNK)
Maximum current VREF can passively sink
SRREF
CVREF = 0 nF, RVREF = 0 Ω
–
–25
–
mA
0.8
–
–
V/µs
–
0.07
0.4
V
OVERCURRENT FAULT CHARACTERISTICS (OCF)
OCF On Voltage [3]
VFAULT-ON
OCF Sink Current [3]
IOCF(SNK)
VOC Operating Voltage Range
VVOC
Fault Error
EOCF
OCF Hysteresis
OCF Mask [3]
OCF Response Time
OCF Hold Time [3]
–
100
–
nA
0.01
–
1.1
mA
VCC = 5 V
0.5
–
2
V
VCC = 3.3 V
0.33
–
1.32
V
Fault Assertion
–10
±3
10
%IOCF-OP
–
6
–
%FS
VCC = 3.3 V
–
9
–
%FS
Time from IOCF-OP, with a 1.2 × IOCF-OP until fault asserts
–
1
1.5
μs
Time IOCF-OP must be present after tOCF-R for fault assertion [3]
0
0
3
µs
tOCF-MASK = 0 µs
–
1
1.5
µs
Minimum duration of FAULT assertion [2]
0
0
5
ms
–
1
–
MΩ
VCC = 5 V
3.75
–
–
V
VCC = 3.3 V
2.25
–
–
V
VL(SEL)
–
–
0.5
V
ISEL(SNK)
–
–
±10
µA
tOCF-R
tOCF-MASK
[3]
No Fault
VCC = 5 V
IOCF(HYS)
OCF Reaction Time [3]
RPU = 4.7 kΩ, under fault condition
tOCF
tOCF-HOLD
GAIN SELECTION PIN CHARACTERISTICS (GAIN_SEL0, GAIN_SEL1)
Gain Select Internal Resistor
GAIN_SEL Logic Input Voltage
Leakage Current [3]
RGSint
VH(SEL)
VCC rate +1 V/ms, for best accuracy.
Typical value is factory default.
[3] Guaranteed by design and bench validated
[1]
[2]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
10
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050B5-M
ACS37002LMABTR-050B5-M Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
40
50
0
1
50
40
1
0
60
33.3
1
1
30
66.7
Selection
Combination
ACS37002LMABTR-050B5-M PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–50
–
50
A
Gain Sel 01
–40
–
40
A
Gain Sel 10
–33.3
–
33.3
A
Gain Sel 11
–66.7
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
40
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
50
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
60
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
30
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
2.5
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
%
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
Zero Current Reference Error Including
Lifetime Drift
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VRE_LTD
VOE_LTD
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
11
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066B5-M
ACS37002LMABTR-066B5-M Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
30
66.7
0
1
25
80
1
0
20
100
1
1
15
133.3
Selection
Combination
ACS37002LMABTR-066B5-M PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–66.7
–
66.7
A
Gain Sel 01
–80
–
80
A
Gain Sel 10
–100
–
100
A
Gain Sel 11
–133.3
–
133.3
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
30
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
25
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
20
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
15
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
2.5
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
Offset Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
QVO Error Including Lifetime Drift
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
12
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050U5-M
ACS37002LMABTR-050U5-M Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Unidirectional
0
0
80
50
0
1
100
40
1
0
120
33.3
1
1
60
66.7
Selection
Combination
ACS37002LMABTR-050U5-M PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
0
–
50
A
Gain Sel 01
0
–
40
A
Gain Sel 10
0
–
33.3
A
Gain Sel 11
0
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
80
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
100
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
120
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
60
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
25
50
100
%FS
Zero Current Output Voltage
VIOUT(Q)
Unidirectional; IP = 0 A, TA = 25°C
–
0.5
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
Offset Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
QVO Error Including Lifetime Drift
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
13
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066U5-M
ACS37002LMABTR-066U5-M Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Unidirectional
0
0
60
66.7
0
1
50
80
1
0
40
100
1
1
30
133.3
Selection
Combination
ACS37002LMABTR-066U5-M PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
0
–
66.7
A
Gain Sel 01
0
–
80
A
Gain Sel 10
0
–
100
A
Gain Sel 11
0
–
133.3
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
60
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
50
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
40
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
30
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
25
50
100
%FS
Zero Current Output Voltage
VIOUT(Q)
Unidirectional; IP = 0 A, TA = 25°C
–
0.5
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
Offset Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
QVO Error Including Lifetime Drift
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
14
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050B3
ACS37002LMABTR-050B3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
26.4
50
0
1
33
40
1
0
39.6
33.3
1
1
19.8
66.7
Selection
Combination
ACS37002LMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–50
–
50
A
Gain Sel 01
–40
–
40
A
Gain Sel 10
–33.3
–
33.3
A
Gain Sel 11
–66.7
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
26.4
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
33
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
39.6
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
19.8
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
1.65
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
15
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066B3
ACS37002LMABTR-066B3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
19.8
66.7
0
1
16.5
80
1
0
13.2
100
1
1
9.9
133.3
Selection
Combination
ACS37002LMABTR-066B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–66.7
–
66.7
A
Gain Sel 01
–80
–
80
A
Gain Sel 10
–100
–
100
A
Gain Sel 11
–133.3
–
133.3
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
19.8
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
16.5
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
13.2
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
9.9
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
1.65
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
16
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050U3
ACS37002LMABTR-050U3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Unidirectional
0
0
52.8
50
0
1
66
40
1
0
79.2
33.3
1
1
39.6
66.7
Selection
Combination
ACS37002LMABTR-050U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
0
–
50
A
Gain Sel 01
0
–
40
A
Gain Sel 10
0
–
33.3
A
Gain Sel 11
0
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
52.8
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
66
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
79.2
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
39.6
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
25
50
100
%FS
Zero Current Output Voltage
VIOUT(Q)
Unidirectional; IP = 0 A, TA = 25°C
–
0.33
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
Offset Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
QVO Error Including Lifetime Drift
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
17
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066U3
ACS37002LMABTR-066U3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Unidirectional
0
0
39.6
66.7
0
1
33
80
1
0
26.4
100
1
1
19.8
133.3
Selection
Combination
ACS37002LMABTR-066U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
0
–
66.7
A
Gain Sel 01
0
–
80
A
Gain Sel 10
0
–
100
A
Gain Sel 11
0
–
133.3
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
39.6
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
33
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
26.4
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
19.8
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
25
50
100
%FS
Zero Current Output Voltage
VIOUT(Q)
Unidirectional; IP = 0 A, TA = 25°C
–
0.33
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–1.5
–0.5 ±0.6
1.5
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–8
–1 ±4
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–3 ±5
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–1 ±4
10
mV
Zero Current Reference Error
VRE
Offset Error
VOE
QVO Error
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–1.6 ±1.2
3.6
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
–3.4
–1.5 ±1.1
3.4
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
18
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002KMABTR-050B5-M
AACS37002KMABTR-050B5-M Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
40
50
0
1
50
40
1
0
60
33.3
1
1
30
66.7
Selection
Combination
ACS37002KMABTR-050B5-M PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 125°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–50
–
50
A
Gain Sel 01
–40
–
40
A
Gain Sel 10
–33.3
–
33.3
A
Gain Sel 11
–66.7
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
40
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
50
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
60
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
30
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
2.5
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR+V REF)) / (Sens(IDEAL) × I PR)× 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C
–1
–0.3 ±0.5
1
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–8
±5
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–10
–3 ±4
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±5
10
mV
Zero Current Reference Error
VRE
Offset Error
VOE
QVO Error
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.4
–1.4 ±1.2
3.4
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C
–3.2
–1.3 ±1.1
3.2
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
Offset Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
QVO Error Including Lifetime Drift
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
19
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002KMABTR-050B3
ACS37002KMABTR-050B3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
26.4
50
0
1
33
40
1
0
39.6
33.3
1
1
19.8
66.7
Selection
Combination
ACS37002KMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 125°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–50
–
50
A
Gain Sel 01
–40
–
40
A
Gain Sel 10
–33.3
–
33.3
A
Gain Sel 11
–66.7
–
66.7
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
26.4
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
33
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
39.6
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
19.8
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
1.65
–
V
%
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–0.5 ±0.6
1.75
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C
–1
–0.3 ±0.5
1
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
–2 ±3
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–1 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–8
±5
8
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–8
–1 ±3
8
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–10
–3 ±4
10
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±5
10
mV
Zero Current Reference Error
Offset Error
QVO Error
VRE
VOE
VQE
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
[2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.4
–1.4 ±1.2
3.4
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C
–3.2
–1.3 ±1.1
3.2
%
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
–3 ±4
10
mV
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
–10
–2 ±3
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–10
–2 ±5
10
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–10
±4
10
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–14
–4 ±6
14
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
±7
10
mV
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VQE_LTD
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
20
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-015B5
ACS37002LLAATR-015B5 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
133.3
15
0
1
166.6
12
1
0
200
10
1
1
100
20
Selection
Combination
ACS37002LLAATR-015B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–15
–
15
A
Gain Sel 01
–12
–
12
A
Gain Sel 10
–10
–
10
A
Gain Sel 11
–20
–
20
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
133.3
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
166.6
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
200
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
100
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
2.5
–
V
IP = IPR(max), TA = 25°C to 150°C
–1.75
±1.2
1.75
%
IP = IPR(max), TA = –40°C to 25°C
–1.75
±1.4
1.75
%
IP = IPR(max), TA = 25°C to 150°C, TA = –40°C to 25°C
–1.5
±1.2
1.5
%
–10
±3
10
mV
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
Sensitivity Error
ESENS
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
Offset Error
VOE
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–8
±5
8
mV
QVO Error
VQE
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C, TA = –40°C to 25°C
–10
±5
10
mV
IP = IPR(max), TA = 25°C to 150°C
–3.7
–0.7 ±1.8
3.7
%
IP = IPR(max), TA = –40°C to 25°C
–3.5
–0.5 ±1.9
3.5
%
IP = IPR(max), TA = 25°C to 150°C
–3.5
–0.8 ±1.6
3.5
%
IP = IPR(max), TA = –40°C to 25°C
–3.4
–0.5 ±1.8
3.4
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C,
TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–15
2 ±7
15
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–17
±9
17
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–14
±8
14
mV
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
Total Error Including Lifetime Drift
ETOT_LTD
Sensitivity Error Including Lifetime Drift
ESENS_LTD
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
Offset Error Including Lifetime Drift
VOE_LTD
QVO Error Including Lifetime Drift
VQE_LTD
[2][3]
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
21
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-025B5
ACS37002LLAATR-025B5 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
80
25
0
1
66.6
30
1
0
53.3
37.5
1
1
40
50
Selection
Combination
ACS37002LLAATR-025B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–25
–
25
A
Gain Sel 01
–30
–
30
A
Gain Sel 10
–37.5
–
37.5
A
Gain Sel 11
–50
–
50
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
80
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
66.6
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
53.3
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
40
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
2.5
–
V
IP = IPR(max), TA = 25°C to 150°C
–1.75
±1.2
1.75
%
IP = IPR(max), TA = –40°C to 25°C
–1.75
±1.4
1.75
%
IP = IPR(max), TA = 25°C to 150°C, TA = –40°C to 25°C
–1.5
±1.2
1.5
%
–10
±3
10
mV
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
Sensitivity Error
ESENS
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
Offset Error
VOE
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C, TA = –40°C
to 25°C
–8
±5
8
mV
QVO Error
VQE
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–10
±5
10
mV
IP = IPR(max), TA = 25°C to 150°C
–3.7
–0.7 ±1.8
3.7
%
IP = IPR(max), TA = –40°C to 25°C
–3.5
–0.5 ±1.9
3.5
%
IP = IPR(max), TA = 25°C to 150°C
–3.5
–0.8 ±1.6
3.5
%
IP = IPR(max), TA = –40°C to 25°C
–3.4
–0.5 ±1.8
3.4
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C,
TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–15
2 ±7
15
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–17
±9
17
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–14
±8
14
mV
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
Total Error Including Lifetime Drift
Sensitivity Error Including Lifetime Drift
ETOT_LTD
ESENS_LTD
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
Offset Error Including Lifetime Drift
VOE_LTD
QVO Error Including Lifetime Drift
VQE_LTD
[2][3]
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
22
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-015B3
ACS37002LLAATR-015B3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
88
15
0
1
110
12
1
0
132
10
1
1
66
20
Selection
Combination
ACS37002LLAATR-015B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
–15
–
15
A
Gain Sel 01
–12
–
12
A
Gain Sel 10
–10
–
10
A
Gain Sel 11
–20
–
20
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
88
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
110
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
132
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
66
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
50
100
200
%FS
Zero Current Output Voltage
VIOUT(Q)
Bidirectional; IP = 0 A, TA = 25°C
–
1.65
–
V
IP = IPR(max), TA = 25°C to 150°C
–1.75
±1.2
1.75
%
IP = IPR(max), TA = –40°C to 25°C
–1.75
±1.4
1.75
%
IP = IPR(max), TA = 25°C to 150°C, TA = –40°C to 25°C
–1.5
±1.2
1.5
%
–10
±3
10
mV
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
Sensitivity Error
ESENS
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
Offset Error
VOE
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–8
±5
8
mV
QVO Error
VQE
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–10
±5
10
mV
IP = IPR(max), TA = 25°C to 150°C
–3.7
–0.7 ±1.8
3.7
%
IP = IPR(max), TA = –40°C to 25°C
–3.5
–0.5 ±1.9
3.5
%
IP = IPR(max), TA = 25°C to 150°C
–3.5
–0.8 ±1.6
3.5
%
IP = IPR(max), TA = –40°C to 25°C
–3.4
–0.5 ±1.8
3.4
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C,
TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–15
2 ±7
15
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–17
±9
17
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–14
±8
14
mV
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
Total Error Including Lifetime Drift
ETOT_LTD
Sensitivity Error Including Lifetime Drift
ESENS_LTD
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
Offset Error Including Lifetime Drift
VOE_LTD
QVO Error Including Lifetime Drift
VQE_LTD
[2][3]
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
[2] Typicals
[3]
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
23
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-025U3
ACS37002LLAATR-025U3 Gain_Sel Pin Performance Key
Selection Identifier
Parameter (Units)
Gain_Sel_1 (Boolean)
Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Unidirectional
0
0
105.6
25
0
1
88
30
1
0
70.4
37.5
1
1
52.8
50
Selection
Combination
ACS37002LLAATR-025U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
Gain Sel 00
0
–
25
A
Gain Sel 01
0
–
30
A
Gain Sel 10
0
–
37.5
A
Gain Sel 11
0
–
50
A
Gain Sel 00; IPR(min) < IP < IPR(max)
–
105.6
–
mV/A
Gain Sel 01; IPR(min) < IP < IPR(max)
–
88
–
mV/A
Gain Sel 10; IPR(min) < IP < IPR(max)
–
70.4
–
mV/A
Gain Sel 11; IPR(min) < IP < IPR(max)
–
52.8
–
mV/A
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
IPR
Sens
Overcurrent Fault Operating Range
IOCF-OR
Typ. = factory-programmed default, FS = Full-Scale
25
50
100
%FS
Zero Current Output Voltage
VIOUT(Q)
Unidirectional; IP = 0 A, TA = 25°C
–
0.33
–
V
IP = IPR(max), TA = 25°C to 150°C
–1.75
±1.2
1.75
%
IP = IPR(max), TA = –40°C to 25°C
–1.75
±1.4
1.75
%
IP = IPR(max), TA = 25°C to 150°C, TA = –40°C to 25°C
–1.5
±1.2
1.5
%
–10
±3
10
mV
TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × I PR + V REF)) / (Sens(IDEAL) × I PR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
Sensitivity Error
ESENS
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
Offset Error
VOE
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–8
±5
8
mV
QVO Error
VQE
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C,
TA = –40°C to 25°C
–10
±5
10
mV
IP = IPR(max), TA = 25°C to 150°C
–3.7
–0.7 ±1.8
3.7
%
IP = IPR(max), TA = –40°C to 25°C
–3.5
–0.5 ±1.9
3.5
%
IP = IPR(max), TA = 25°C to 150°C
–3.5
–0.8 ±1.6
3.5
%
IP = IPR(max), TA = –40°C to 25°C
–3.4
–0.5 ±1.8
3.4
%
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C,
TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
–15
2 ±7
15
mV
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
–11
±7
11
mV
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–17
±9
17
mV
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–14
±8
14
mV
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT
Total Error Including Lifetime Drift
Sensitivity Error Including Lifetime Drift
ETOT_LTD
ESENS_LTD
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
Offset Error Including Lifetime Drift
VOE_LTD
QVO Error Including Lifetime Drift
VQE_LTD
[2][3]
[1] Typicals
values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
24
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FUNCTIONAL DESCRIPTION
Power-On Reset Operation
The descriptions in this section assume: temperature = 25°C, with
the labeled test conditions. The provided graphs in this section
show VIOUT moving with VCC. The voltage of VIOUT during a
high-impedance state will be most consistent with a known load
(RL,CL).
Voltage
VCC
1
POWER-ON/POWER-OFF
As VCC ramps up, the VIOUT and VREF outputs are high impedance until VCC reaches and passes VPOR(H) [1] in Figure 4.
VREF and VIOUT will continue to report until VCC is less than
VPOR(L) [5] in Figure 4, at which point they will go high impedance. Note that the time it takes the output to reach a steady state
will depend on the external circuitry used.
VPOR(H)
QVO 2.5V
A
HIGH Z
tPOD
Time
POWER-ON DELAY (tPOD)
Viewer does not support full SVG 1.1
When the supply is ramped to VPOR(H) [2] in Figure 4, the device
will require a finite time to power its internal components before
the outputs are released from high impedance and can respond to
an input magnetic field. Power-On Time, tPOD, is defined as the
time it takes for the output voltage to settle within ±10% of its
steady-state value under an applied magnetic field, which can be
seen as the time from [1] to [A] in Figure 5. After this delay, the
output will quickly approach VIOUT(IP) = Sens × IP + VREF.
Voltage
V OVD(H)
V OVD(L)
VCC
VIOUT
1
VIOUT
5V
Figure 5: tPOD, RL = Pull-Up
VREF
2
1
3
4
5
5
VOVDHys
5V
V POR(H)
V POR(L)
VPORHys
QVO 2.5 V
High Z
High Z
High Z
High Z
Time
Figure 4: Power States Thresholds with VIOUT Behavior for a 5 V Device, RL = Pull-Down
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
25
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Overvoltage Detection (OVD)
To ensure that the device output is reporting accurately, the
device contains an overvoltage detection flag. This flag on VIOUT
can be used to alert the system that the supply voltage is outside
of the operational limits. When VCC raises above VOVD(H) [3] in
Figure 6, VIOUT will go high impedance and be pulled by the load
resistor to VCC or GND. VREF continues to output normally.
There is hysteresis between OVD enable and disable thresholds
to reducing nuisance flagging and clears.
Voltage
VCC
The enable time for OVD, tOVD(E), is the time from VOVD(H) [4]
to OVD flag [B] in Figure 6. The enable flag for OVD has a
counter to reduce transients faster than 64 µs from triggering
nuisance flags.
The disable time for OVD, tOVD(D), is the time from VOVD(L) [5]
until the device returns to normal operation [C] in Figure 6. The
OVD disable time does not have a counter.
VIOUT
3
4
1
VOVD(H)
VOVD(L)
5V
VPOR(H)
VPOR(L)
QVO 2.5 V
High Z
A
t POD
t OVD(E)
C
t OVD(D)
High Z
B
Time
Figure 6: tPOD and tOVD(E/D) with RL = Pull-Up
Allegro MicroSystems
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26
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Absolute Maximum Ratings
FORWARD AND REVERSE REFERENCE/FAULT VOLTAGE
These are the maximum application or environmental conditions
that the device can be subjected before damage may occur.
The Forward Reference/Fault Voltage or VF-RF voltage can be no
greater than VCC + 0.5 up to 6.5 V. This is the greatest voltage
that the VREF and VOCF can be biased with from GND during
programming or transient switching. The Reverse Output Voltage
or VR-RF should not drop below –0.5 V during programming or
transient switching. These voltages should not be used as a DC
voltage bias for an extended time.
SUPPLY ZENER CLAMP VOLTAGES
If the voltage applied to the device continues to increase past
overvoltage detection, there is a point when the Zener diodes will
turn on. These internal diodes are in place to protect the device
from short high voltage or ESD events and should not be used as
a feature to reduce the voltage on a line. Continued exposure to
voltages higher than normal operating voltage, VCC, can weaken
or damage the Zener diodes, which will potentially damage the
part.
FORWARD AND REVERSE SUPPLY VOLTAGE
These are the largest voltage magnitudes that can be supplied to
VCC from GND during programing or transient switching. This
voltage should not be used as a DC voltage bias for an extended
time.
FORWARD AND REVERSE OUTPUT VOLTAGE
The Forward Output Voltage or VFIOUT voltage can be no greater
than VCC + 0.5 up to 6.5 V. This is the greatest voltage that the
output can be biased with from GND during programming or
transient switching. The Reverse Output Voltage or VRIOUT
should not drop below –0.5 V during programming or transient
switching. These voltages should not be used as a DC voltage
bias for an extended time.
OUTPUT SOURCE AND SINK CURRENT
This is the maximum current that VIOUT can passively sink or
source before damage may occur.
AMBIENT TEMPERATURE (TA)
This is the ambient temperature of the device. The Operating
Ambient Temperature Range is the ambient temperature range
that the Common Electricals and Common Performance Characteristics limits are valid. The Optimized Ambient Temperature
Range is the ambient temperature range that the device-specific
performance characteristics limits are valid. ACS37002L devices
have optimized performance in the –40°C to 150°C (“L” temperature) range. ACS37002K devices have optimized performance
in the –40°C to 125°C (“K” temperature) range. The –40°C to
125°C (“K” temperature) range devices have Device Specific
Performance optimized within the –40°C to 125°C temperature
range but will still operate in the –40°C to 150°C (“L” temperature) range.
Allegro MicroSystems
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27
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
DEFINITIONS OF OPERATING AND PERFORMANCE CHARACTERISTICS
Zero Current Voltage Output (VIOUT(Q), QVO)
Output Saturation Voltage (VSAT(HIGH/LOW))
Zero Current Voltage Output or VIOUT(Q) (also called QVO) is
defined as the voltage on the output, VIOUT when zero amps are
applied through IP.
Output Saturation Voltage, or VSAT, is defined as the voltage that
the VIOUT does not pass as a result to an increasing magnitude of
current. VSAT(HIGH) is the highest voltage the output can drive to
while, VSAT(LOW) is the lowest. This can be seen in Figure 8. Note
that changing the sensitivity does not change the VSAT points.
QVO Temperature Drift (VQE)
QVO Temperature Drift, or VQE, is defined as the drift of QVO
from room to hot or room to cold (25°C to 125/150°C or 25°C to
–40°C respectively). To improve over temperature performance
the temperature drift is compensated with Allegro factory trim to
remain within the limits across temperature.
Reference Voltage (VREF)
There is a Voltage Reference Output, (VREF) on the ACS37002.
This output reports the zero current voltage for the output channel
VIOUT allowing for differential measurement and a device referred
supply for the VOC pin.
OUTPUT VOLTAGE OPERATING RANGE (V OOR)
The Output Voltage Operating Range, or VOOR, is the functional
range for linear performance of VIOUT and its related datasheet
parameters. This can be seen in Figure 8. The VOOR is the output
region that the performance accuracy parameters are valid. It is
possible for the output to report beyond these voltages until VSAT,
but certain parameters cannot be guaranteed. The output performance is demonstrated in Figure 8 through and beyond the VOOR.
Voltage Output Operating Range for VCC and
Output Modes, VOOR(Vcc, Mode)
Reference Voltage Temperature Drift (VRE)
VCC (V)
Bidrectional
Unidirectional
3.3
±1.32
+2.64
5
±2
+4
Reference Voltage Temperature Drift, or VRE, is defined as
the drift of VREF from room to hot or room to cold (25°C to
125/150°C or 25°C to –40°C respectively).
Output
Offset Voltage (VOE)
5V
VIOUT
+ Offset
- Offset
+VOE
-VOE
VSAT(High)
4.5V
4.5V
Output Voltage Operating Range VOOR
Offset Voltage, or VOE, is defined as the difference between QVO
and VREF (see Figure 7). VOE includes the drift of QVO minus
VREF from room to hot or room to cold (25°C to 125/150°C or
25°C to –40°C respectively).
+ FS Input
+ FS Output
+ Sense Error
0 Sense Error
QVO
- Sense Error
+ FS Input
QVO
Input
Input
- FS Input
- FS Output
- FS Input
0.5V
V IOUT(ideal)
0.5V
VREF
Current
Figure 7: Offset (VOE) Between VIOUT and VREF
VSAT(Low)
GND
Figure 8: VOOR, VSAT and SENS with Full Scale
Allegro MicroSystems
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28
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Sensitivity (Sens)
Gain Selection Pins
Sensitivity, or Sens, is the ratio of the output swing versus the
applied current through the primary conductor, IP. This current
causes a voltage deviation away from QVO on the VIOUT output
until VSAT. The magnitude and direction of the output voltage swing is proportional to the magnitude and direction of the
applied current. This proportional relationship between output
and input is Sensitivity and is defined as:
The ACS37002 features external gain selection pins that configures the device sensitivity. The gain select logic is latched based
on the pin voltage at startup. Either pin may be shorted directly
to VCC or GND, which is logic 1 or 0 respectively. Both pins
include an internal 1 MΩ pull-down resistor to GND. Externally floating pins will be interpreted as logic 0; if both pins are
floating, the device will be in the 00 configuration. Specific gain
select performance can be found in the selection Performance
Characteristics table. To change the gain of the device, refer to
Figure 18 in the Application and Theory section.
Sens =
VIOUT(I1) – VIOUT(I2)
I1 – I2
where I1 and I2 are two different currents, and where VIOUT(I1)
and VIOUT(I2) are the voltages of the device at the applied currents. VIOUT, I1, or I2 can be QVO with zero current.
Sensitivity Error (Esens)
Sensitivity Temperature Drift, or Esens, is the drift of Sens from
room to hot or room to cold (25°C to 125°C or 25°C to –40°C
respectively). No trimming/programming is needed as temperature drift is compensated with Allegro factory trim.
Full Scale (FS)
Full Scale, or FS, is a method to relate an input and/or output to
the max input and/or output of the device. For example, 50%FS
of a 10A sensor is 5A, or 50% of its maximum input current. The
50% input of 5A will cause the output to move 50%, or 50%FS.
FS is used to interchangeably refer to input and output deviations
when discussing input steps, fault trip thresholds and relating input
to output performance. FSINPUT is the input bias that results in
FSOUTPUT and these two are
directly related by the device actual
𝑉𝑉𝑉𝑉𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼1) − 𝑉𝑉𝑉𝑉𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼2)
= and output can be seen in Figure 8,
sensitivity. Both FS𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆
input
𝐼𝐼𝐼𝐼1 − 𝐼𝐼𝐼𝐼2
labeled as positive or negative FS input and FS output. The equation for input referred FS for a 5V bidirectional device is:
FS =
VOOR(5V,Bi)
2V
=±
SensActual
SensActual
Note: that a percentage change in FSINPUT is equivalent to a
resultant percentage change ofSense
FSOUTPUT
and visa versa.
I2±
ELIN(±) = �1 −
Nonlinearity (ELIN)
SensI1±
� × 100%
𝑉𝑉𝑉𝑉𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼1)
As the amount of field
applied
to −
the𝑉𝑉𝑉𝑉𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼2)
part changes, the sensitiv𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆 =𝑉𝑉𝑉𝑉
−−𝑉𝑉𝑉𝑉𝐼𝐼𝐼𝐼𝑉𝑉𝑉𝑉
𝑉𝑉𝑉𝑉
𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼1)
𝐼𝐼𝐼𝐼2
𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼2)
𝐼𝐼𝐼𝐼
𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼1)
𝐼𝐼𝐼𝐼
𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼(𝐼𝐼𝐼𝐼2)
1
−
VREF
V
ity of the device can
also
change
slightly.
This is referred to as
IOUT(IX+)
𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆
𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆
=
Sens=
𝐼𝐼𝐼𝐼1𝐼𝐼𝐼𝐼1−−I𝐼𝐼𝐼𝐼2𝐼𝐼𝐼𝐼2
IX+ =
linearity error or ELIN (see
Figure
10).
X+ Consider two currents,
I1(1/2 FS) and I2(FS). Ideally, the sensitivity of the device is the
VOOR(5V,Bi)
2V
same for both fields.
Linearity
Error
calculated as the percent
FS =
= ± is 2V
VV
2V
OOR(5V,Bi)
Sens
Sens
OOR(5V,Bi)
Actual
Actual
−
V
V
REF
FS
==
==±±to another.
FS
change in sensitivity
from
oneIOUT(IX−)
field
Error is calculated
Sens
Sens
Sens
IX−
SensActual
Sens=
Actual
Actual
Actual
I
separately for positive (ELIN(+)) andX−negative (ELIN(-)) currents,
and the percent errors are defined
as:
Sense
I2±
where:
Figure 9: Output Accuracy Pocket for Room and
Across Temperature
ELIN(±) = �1 −Sense
� × 100%
Sens
I2±
I1±
I�1
= Sense
2
× II2±
2+−−
1+ ��××100%
EELIN(±)
100%
LIN(±)==�1
Sens
SensI1±
I1±
VIOUT(IX+) − VREF
SensIX+I2−
=V= 2 × I1− − V
V
IOUT(IX+)
REF
IX+ − V
IOUT(IX+)
REF
Sens
SensIX+
IX+==
IX+
IX+
VIOUT_Actual
ETOT = �1 − VIOUT(IX−) �−×VREF
100%
VIOUT_Ideal
SensIX− =V
−
V
−
V
V
IOUT(IX−)
REF
IX−
IOUT(IX−)
REF
Sens
SensIX−
IX−==
IX−
IX−
VIOUT_Ideal = IP × SensIdeal + VRef_Ideal
I2+ = 2 × I1+
I2+
I2+==22××I1+
I1+
Allegro MicroSystems
ΔQVO
955
log
� Road�
PSRRO I=2−20
=×2Perimeter
× I1−
Manchester,ΔV
NHCC
03103-3353 U.S.A.
I2−
I2−=www.allegromicro.com
=22××I1−
I1−
29
VIOUT(IX−) − VREF
SensVIX−
=
OOR(5V,Bi)
IX− 2V
FS =
=±
SensActual
SensActual
I2+ = 2 × I1+
400 kHz, High Accuracy
SenseI2± Current Sensor
ACS37002
ELIN(±) = �1Fast
− Fault �in×SOICW-16
100%
with Pin-Selectable Gains and Adjustable Overcurrent
Package
SensI1±
I2− = 2 × I1−
Ix are positive and negative currents through IP, such that
|I+2| = 2 × | I+1| and | I-2| = 2 × | I-1|.ELIN = max(ELIN(+) , ELIN(-))
Total Output Error (ETOT)
The Total Output Error is the current measurement error from the
sensor IC as a percentage of the actual applied current. This is
equivalent to the difference between the ideal output voltage and
the actual output voltage, divided by the ideal sensitivity, relative
to the current applied to the device, or simplified to:
ETOT =
VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)
× 100
(Sens(IDEAL) × IPR)
Total Output Error incorporates all sources of error and is a function of current. At relatively high currents, Total Output Error will
be mostly due to sensitivity error, and at relatively low inputs,
Total Output Error will be mostly due to Offset Voltage (VOE). At
I = 0 A, Total Output Error approaches infinity due to the offset.
An example of total error at FS can be seen in Figure 10.
Note: Total Output Error goes to infinity as the amount of applied
field approaches 0 A.
Power Supply Offset Error (VPS)
Power Supply Offset Error or VOE(PS) is defined at the offset error
in mV between VCC and VCC ±10% VCC. For a 5 V device, this
is 5 to 4.5 V and 5 to 5.5 V. For a 3.3 V device, this is 3.3 to 3 V
and 3.3 to 3.6 V.
E Lin
ns
Se
al
Ide
+
O
QV
l
tua
Ac
I2+ = 2 × I1+
ΔQVO
�
PSRRO = 20 × log �
ΔVCC
I2− = 2 × I1−
Power Supply Sensitivity Error (EPS)
Δ%Sens
�
PSRR = 20 × log �
Power Supply SensitivitySError, or ESens(PS)
, is defined as the perΔVCC
VIOUT_Actual
cent sensitivity error
measured
between
V
and VCC ±10%. For
ETOT = �1 −
�CC
× 100%
a 5 V device, this is 5 to 4.5 V Vand
5 to 5.5 V. For a 3.3 V device,
IOUT_Ideal
this is 3.3 to 3 V and 3.3 to 3.6 V.
Sensitivity Power
Supply
Rejection
V
= I × Sens
+ V Ratio (PSRRS)
IOUT_Ideal
P
Ideal
Ref_Ideal
The Sensitivity Power Supply Rejection Ratio or PSRRS is
defined as 20 × log of the ratio of the % change the sensitivity
ΔQVO AC VCC centered at
over the % change in VCC (±100 mV variable
�
PSRRO = 20 × log �
ΔVCCrange. This is the AC
5 V) reported as dB in a specified
frequency
version of the ESens(PS) parameter. The equation is shown below:
E Sens
Δ%Sens
�
PSRRS = 20 × log �
ΔVCC
al)
Ide
T(
U
V IO
The Offset Power Supply Rejection Ratio or PSRRO is defined
as 20 × log of the ratio of the change
of QVO
− VREFin volts over a
VIOUT(IX−)
SensIX− =
±100 mV variable AC
VCC centered atIX−5 V reported as dB in a
VIOUT_Ideal = IP × SensIdeal + VRef_Ideal
specified frequency
range. This is an AC version of the VOE(PS)
parameter. The equation is shown below:
QVO Error
Total Error(FS)
V
IO
UT
(A
ct
ua
l)
Voltage
Offset
VIOUT(IX+) − VREF
SensIX+ =
IX+
VIOUT_Actual
Power ESupply
Rejection
Ratio
(PSRRO)
� × 100%
TOT = �1 −
VIOUT_Ideal
QVOActual
QVOIdeal
1/2 Full Scale
Full Scale
Figure 10: Accuracy Error
Allegro MicroSystems
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30
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FAULT BEHAVIOR
Overcurrent Fault (OCF)
VOLTAGE OVERCURRENT PIN (VOC)
As the output swings, the Overcurrent Fault pin will trigger with
an active low flag if the sensed current exceeds its comparator
threshold. This is internally compared with either the factoryprogrammed thresholds or via the VOC voltage when VVOC >
0.1 V. This flag trips symmetrically for the positive and negative
OCF operating point.
The fault trip points can be set using the VOC pin as the direct
analog input for the fault trip point. The VOC pin voltage can be
set using resistor dividers from VREF on bidirectional devices. The
fault performance is valid when VVOC is within the VOC Operating
Voltage Range or 100 nF
1 nF
>100 nF
3 nF
>1 µF
6 nF
>10 µF
Allegro MicroSystems
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36
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Dynamically Change Gain in a System
The ACS37002 has GAIN_SEL pins that are used to change the
gain of the device on startup. If a more dynamic gain is desired,
then reduce VCC below VPOR(L) and restart the device by returning VCC to the nominal voltage with the new desired GAIN_SEL
configuration. The GAIN_SEL pin voltage must greater than the
desired configuration voltage (VH(SEL) or VL(SEL)) at or before
VCC > VPOR(H) in order to successfully change the device gain.
The GAIN_SEL pin voltage is latched at startup, and any changes
to the pin voltages after the devices VIOUT comes out of high Z
will not affect gain. The cycle time to complete this operation is
up to 2 × tPOD.
Figure 18: GAIN_SEL Dynamic Gain Changing Timing Diagram
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ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
THERMAL PERFORMANCE
The thermal capacity of the ACS37002 should be verified by
Thermal Rise vs. Primary Current
Self-heating due to the flow of current should be considered during the design of any current sensing system. The sensor, printed
circuit board (PCB), and contacts to the PCB will generate heat
as current moves through the system.
The thermal response is highly dependent on PCB layout, copper
thickness, cooling techniques, and the profile of the injected current. The current profile includes peak current, current “on-time”,
and duty cycle. While the data presented in this section was
collected with direct current (DC), these numbers may be used
to approximate thermal response for both AC signals and current
pulses.
The plot in Figure 19 shows the measured rise in steady-state die
temperature of the ACS37002 versus continuous current at an
ambient temperature, TA, of 25 °C. The thermal offset curves may
be directly applied to other values of TA. Conversely, Figure 20
shows the maximum continuous current at a given TA. Surges
beyond the maximum current listed in Figure 21 are allowed
given the maximum junction temperature, TJ(MAX) (165℃), is
not exceeded.
the end user and is specific to the application. The maximum
junction temperature, TJ(MAX) (165℃), should not be exceeded.
Further information on this application testing is available in
the DC and Transient Current Capability application note on the
Allegro website (http://www.allegromicro.com/en/Design-Center/
Technical-Documents/Hall-Effect-Sensor-IC-Publications/DCand-Transient-Current-Capability-Fuse-Characteristics.aspx).
Evaluation Board Layout
Thermal data shown in Figure 19 and Figure 20 was collected
using the ASEK37002 Evaluation Board (TED-0002825). This
board includes 750 mm2 of 4 oz. copper (0.1388 mm) connected
to pins 1 through 4, and to pins 5 through 8, with thermal vias
connecting the layers. Top and bottom layers of the PCB are
shown below in Figure 21.
Figure 19: Self heating in
the MA and LA package due to current flow
Figure 20: Maximum Continuous Current
at a Given TA
Figure 21: Top and Bottom Layers for ASEK37002
Evaluation Board
Gerber files for the ASEK37002 evaluation board are available
for download from the Allegro website. See the technical documents section of the ACS37002 webpage (https://www.allegromicro.com/en/products/sense/current-sensor-ics/zero-to-fifty-ampintegrated-conductor-sensor-ics/acs37002).
Allegro MicroSystems
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38
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
PACKAGE OUTLINE DRAWINGS
For Reference Only – Not for Tooling Use
(Reference MS-013AA)
NOT TO SCALE
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
8°
0°
10.30 ±0.20
16
0.33
0.20
1.06 D
7.50 ±0.10
0.46 D
A
1
10.30 ±0.33
1.27 1.40 REF
0.40
2
Branded Face
0.25 BSC
SEATING PLANE
16X
C
2.65 MAX
0.10
C
GAUGE PLANE
SEATING
PLANE
0.30
0.10
1.27 BSC
0.51
0.31
0.65
1.27
16
NNNNNNN
LLLLLLLL
2.25
1
9.50
1
C
2
PCB Layout Reference View
B
Standard Branding Reference View
A
Terminal #1 mark area
B
Branding scale and appearance at supplier discretion
N = Device part number
L = Assembly Lot Number, first eight characters
C Reference land pattern layout (reference IPC7351 SOIC127P600X175-8M);
all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
D Hall elements; not to scale
Figure 22: Package MA, 16-Pin SOICW
Allegro MicroSystems
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39
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
10.30 ±0.20
8°
0°
16
0.33
0.20
D 0.92
7.50 ±0.10
A
D D1
10.30 ±0.33
D2 D
1.40 REF
1
2
1.27
0.40
0.69 D
Branded Face
16×
SEATING
PLANE
0.10 C
0.51
0.31
1.27 BSC
0.25 BSC
SEATING PLANE
GAUGE PLANE
C
2.65 MAX
0.30
0.10
For Reference Only; not for tooling use (reference MS-013AA)
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
A Terminal #1 mark area
ACS37002 (5 V)
ACS37002 (3.3 V)
ACS37002
Lot Number
ACS37002
Lot Number
1
1
B Standard Branding Reference View
B Branding scale and appearance at supplier discretion
C
Line 1: Part Number
Line 2: First 9 characters of Assembly Lot Number
Reference land pattern layout (reference IPC7351
SOIC127P600X175-8M); all pads a minimum of 0.20 mm from all
adjacent pads; adjust as necessary to meet application process
requirements and PCB layout tolerances
D Hall elements (D1, D2); not to scale
0.65
16
1.27
1.27
0.65
16
1.65
2.25
9.75
9.50
1
1
2
C
PCB Layout Reference View
2
High-Isolation PCB Layout Reference View
Figure 23: Package LA, 16-PIN SOICW
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
40
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Revision History
Number
Date
Description
–
June 24, 2020
Initial release
1
July 8, 2020
Updated Features and Benefits, Selection Guide (page 2), Working Voltage values (page 4),
Footnote 2 (pages 10-19), Voltage Overcurrent Pin section (page 30), and Branding (page 38)
Updated Features and Benefits, Description, and Figure 1 (page 1); added UL certification (page 2);
updated Selection Guide table (page 2), Forward Output Voltage and Reverse Output Voltage
symbols (page 3), Isolation Characteristics and MA Package Specific Performance tables (page 4),
Supply Voltage, Supply Bypass Capacitor, Primary Conductor Resistance, Power-On Reset
Voltage, Power-On Time, Undervoltage and Undervoltage Detection Threshold (page 7), Rise
Time, Response Time, Propagation Delay Time, Noise Density (page 8), VOC Operating Voltage
Range, OCF Reaction Time, OCF Mask, OCF Response Time (page 9); added footnote 4 (page 9);
Performance Characteristic tables (pages 10-19); updated Current Sensing Range and Sensitivity
values (pages 21-23); added Functional Description (pages 24-27), Definitions of Operating and
Performance Characteristics (pages 28-32); updated Figure 20 (page 34),Theory and Functionality
(pages 35-36).
2
October 16, 2020
3
December 16, 2020
Updated UVD and OVD Threshold test conditions (page 7); removed Overshoot and Settling Time
sections and Figure 19 (page 33); fixed Figure 18 (page 33) graphical issue; updated Figure 19
(page 34), and other minor editorial updates.
4
May 14, 2021
Updated Features and Benefits, Description, Figure 1 caption (pages 1-2), Table of Contents
(page 3); added Maximum Continuous Current (page 4), MSL Rating (page 5); updated Dielectric
Strength Test Voltage (page 5), Reference Resistive Load, Primary Conductor Inductance, Typical
Buffer Resistance (page 8), Internal Bandwidth, Rise Time, Response Time, Propagation Delay,
Noise Density, Noise, Power Supply Rejection Ratio Offset, and Power Supply Rejection Ratio
Sens test conditions (page 9), OCF Response Time test conditions and footnote 2 (page 10), Zero
Current Output Voltage (page 23), Current Sensing Range, Overcurrent Fault Operating Range,
and Zero Current Output Voltage (page 24), Functional Description Diagrams (pages 25-29),
Definition of Operating and Performance Characteristics diagrams and equations (pages 30-32),
Fault Behavior Diagrams (page 34), Response Characteristics Definitions and Performance Data
section (pages 35-36), Application and Theory diagram (page 38), Thermal Performance diagram
(page 40), and other minor editorial updates.
5
June 24, 2021
UVD functionality disabled (all pages); updated part numbers (pages 2, 11-14, 19); updated
Isolation and Package Characteristics tables (page 5)
6
September 14, 2021
Updated part numbering schematic (page 2) and other minor editorial updates (pages 2, 4, 9, 38)
7
November 10, 2021
Removed footnote 4 (page 2); updated Power Supply Offset Error (page 9, Total Error and Total
Error Components and Total Error and Total Error Components Including Lifetime Drifts values and
footnotes (pages 21-24); updated Total Output Error equation (page 30), and package drawing
(page 40).
Copyright 2021, Allegro MicroSystems.
Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit
improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the
information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of
Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor
for any infringement of patents or other rights of third parties which may result from its use.
Copies of this document are considered uncontrolled documents.
For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
41
