ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
FEATURES AND BENEFITS
DESCRIPTION
• AEC-Q100 qualified
• Differential Hall sensing rejects common-mode fields
• 1.2 mΩ primary conductor resistance for low power loss
and high inrush current withstand capability
• Integrated shield virtually eliminates capacitive coupling
from current conductor to die, greatly suppressing output
noise due to high dv/dt transients
• Industry-leading noise performance with greatly
improved bandwidth through proprietary amplifier and
filter design techniques
• High-bandwidth 120 kHz analog output for faster
response times in control applications
• Filter pin allows user to filter the output for improved
resolution at lower bandwidth
• Patented integrated digital temperature compensation
circuitry allows for near closed loop accuracy over
temperature in an open-loop sensor
• Small footprint, low-profile SOIC8 package suitable for
space-constrained applications
• Filter pin simplifies bandwidth limiting for better
resolution at lower frequencies
The Allegro™ ACS725 current sensor IC is an economical and
precise solution for AC or DC current sensing in industrial,
automotive, commercial, and communications systems. The
small package is ideal for space-constrained applications
while also saving costs due to reduced board area. Typical
applications include motor control, load detection and
management, switched-mode power supplies, and overcurrent
fault protection.
The device consists of a precise, low-offset, linear Hall
sensor circuit with a copper conduction path located near the
surface of the die. Applied current flowing through this copper
conduction path generates a magnetic field which is sensed
by the integrated Hall IC and converted into a proportional
voltage. The current is sensed differentially in order to reject
common-mode fields, improving accuracy in magnetically
noisy environments. The inherent device accuracy is optimized
through the close proximity of the magnetic field to the Hall
transducer. A precise, proportional voltage is provided by the
low-offset, chopper-stabilized BiCMOS Hall IC, which is
programmed for accuracy after packaging. The output of the
device has a positive slope when an increasing current flows
through the primary copper conduction path (from pins 1 and
2, to pins 3 and 4), which is the path used for current sensing.
The internal resistance of this conductive path is 1.2 mΩ typical,
providing low power loss.
Continued on the next page…
TÜV America
Certificate Number:
U8V 18 02 54214 041
CB 14 11 54214 031
CB Certificate Number:
US-32848-UL
The terminals of the conductive path are electrically isolated
from the sensor leads (pins 5 through 8). This allows the
ACS725 current sensor IC to be used in high-side current sense
applications without the use of high-side differential amplifiers
or other costly isolation techniques.
PACKAGE: 8-Pin SOIC (suffix LC)
Continued on the next page…
Not to scale
1
VCC
IP+
+IP
8
ACS725
2
IP+
VIOUT
7
IP
3
IP–
FILTER
CBYPASS
0.1 µF
6
–IP
4
IP–
GND
5
CF
1 nF
CLOAD
The ACS725 outputs an
analog signal, VIOUT , that
changes, proportionally,
with the bidirectional AC
or DC primary sensed
current, IP , within the
specified measurement
range. The FILTER pin
can be used to decrease
the bandwidth in order
to optimize the noise
performance.
Typical Application
ACS725-DS, Rev. 17
MCO-0000160
May 16, 2022
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
FEATURES AND BENEFITS (continued)
• 3.3 V, single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage for
improved accuracy
• Chopper stabilization results in extremely stable quiescent
output voltage
• Nearly zero magnetic hysteresis
• Ratiometric output from supply voltage
DESCRIPTION (continued)
The ACS725 is provided in a small, low-profile surface-mount
SOIC8 package. The leadframe is plated with 100% matte tin, which
is compatible with standard lead (Pb) free printed circuit board
assembly processes. Internally, the flip-chip device is considered
Pb-free. However, the solder bump connections are available in a
Pb-free or high-temperature Pb-based option. Part numbers followed
by -S are manufactured with tin-silver-based solder bumps, making
these parts Pb-free compliant without the use of RoHS exemptions.
Part numbers followed by -T are manufactured with Pb-based solder
bumps using allowed RoHS exemptions.
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
SELECTION GUIDE
IPR
(A)
Sens(Typ)
at VCC = 3.3 V
(mV/A)
ACS725LLCTR-05AB-S
±5
264
ACS725LLCTR-10AB-S
±10
132
ACS725LLCTR-10AU-S
10
264
ACS725LLCTR-20AB-S
±20
66
ACS725LLCTR-20AU-S
20
132
ACS725LLCTR-30AB-S
±30
44
ACS725LLCTR-30AB-S-H [2]
±30
44
ACS725LLCTR-30AU-S
30
88
ACS725LLCTR-40AB-S
±40
33
ACS725LLCTR-50AB-S
±50
26.4
ACS725LLCTR-05AB-T
±5
264
ACS725LLCTR-10AB-T
±10
132
ACS725LLCTR-10AU-T
10
264
ACS725LLCTR-20AB-T
±20
66
ACS725LLCTR-20AU-T
20
132
ACS725LLCTR-30AB-T
±30
44
ACS725LLCTR-30AB-T-H [2]
±30
44
ACS725LLCTR-30AU-T
30
88
ACS725LLCTR-40AB-T
±40
33
ACS725LLCTR-50AB-T
±50
26.4
Part Number
TA
(°C)
Packing
–40 to 150
Tape and Reel, 3000 pieces per reel
–40 to 150
Tape and Reel, 3000 pieces per reel
-S VARIANT [1]
-T VARIANT [3]
[1]
[2]
-S denotes the lead-free construction with tin-silver-based solder bumps.
-H denotes 100% cold calibration at the Allegro factory for improved accuracy.
denotes Pb-contained construction with Pb-based solder bumps. Operating performance of -T and -S devices are identical. -T devices are RoHS-compliant using allowed exemptions provided in Annex III and IV of Directive 2011/65/EU [Exemptions 7(a), 15, 15(a), as applicable].
[3] -T
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
3
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Notes
Rating
Units
Supply Voltage
VCC
6
V
Reverse Supply Voltage
VRCC
–0.1
V
Output Voltage
VIOUT
VCC + 0.5
V
Reverse Output Voltage
VRIOUT
Operating Ambient Temperature
TA
Range L
–0.1
V
–40 to 150
°C
Junction Temperature
TJ(max)
165
°C
Storage Temperature
Tstg
–65 to 165
°C
ISOLATION CHARACTERISTICS
Characteristic
Dielectric Surge Strength Test Voltage [1]
Dielectric Strength Test Voltage [1]
Working Voltage for Basic Isolation [1]
Symbol
Notes
Rating
Unit
VSURGE
Tested ±5 pulses at 2/minute in compliance to IEC 61000-4-5
1.2 µs (rise) / 50 µs (width).
6000
V
Agency type-tested for 60 seconds per UL standard 609501 (edition 2). Production tested at VISO for 1 second, in
accordance with UL 60950-1 (edition 2).
2400
VRMS
Maximum approved working voltage for basic (single)
isolation according UL 60950-1 (edition 2)
420
Vpk or VDC
VISO
VWVBI
297
Vrms
Clearance
Dcl
Minimum distance through air from IP leads to signal leads
4.2
mm
Creepage
Dcr
Minimum distance along package body from IP leadds to
signal leads
4.2
mm
CTI
Material Group II
400 to 599
V
Comparative Tracking Index
[1] Certification
pending.
THERMAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
(Junction to Ambient)
RθJA
Mounted on the Allegro 85-0140 evaluation board with
800 mm2 of 4 oz. copper on each side, connected to pins
1 and 2, and to pins 3 and 4, with thermal vias connecting
the layers. Performance values include the power
consumed by the PCB.
Package Thermal Resistance
(Junction to Lead)
RθJL
Mounted on the Allegro ASEK725 evaluation board.
Value
Units
23
°C/W
5
°C/W
*Additional thermal information available on the Allegro website.
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
4
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
VCC
VCC
Master Current
Supply
To All Subcircuits
Programming
Control
POR
Hall
Current
Drive
CBYPASS
0.1 µF
EEPROM and
Control Logic
Temperature
Sensor
Offset
Control
IP+
Sensitivity
Control
Dynamic Offset
Cancellation
IP+
IP–
+
–
RF(int)
–
VIOUT
+
IP–
GND
CF
FILTER
Functional Block Diagram
Pinout Diagram and Terminal List Table
Terminal List Table
IP+
1
8
VCC
IP+
2
7
VIOUT
IP–
3
6
FILTER
IP–
4
5
GND
Package LC, 8-Pin SOICN
Pinout Diagram
Number
Name
1, 2
IP+
Terminals for current being sensed; fused internally
Description
3, 4
IP–
Terminals for current being sensed; fused internally
5
GND
6
FILTER
Terminal for external capacitor that sets bandwidth
7
VIOUT
Analog output signal
8
VCC
Signal ground terminal
Device power supply terminal
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
5
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
COMMON ELECTRICAL CHARACTERISTICS [1]: Valid through the full range of TA , VCC = 3.3 V, CF = 0, unless otherwise specified
Characteristic
Symbol
Min.
Typ.
Max.
Unit
3
3.3
3.6
V
VCC = 3.3 V, output open
–
10
14
mA
VIOUT to GND
–
–
10
nF
RL
VIOUT to GND
4.7
–
–
kΩ
RIP
TA = 25°C
–
1.2
–
mΩ
Supply Voltage
VCC
Supply Current
ICC
Output Capacitance Load
CL
Output Resistive Load
Primary Conductor Resistance
Internal Filter Resistance [2]
Common Mode Field Rejection Ratio
Test Conditions
RF(int)
CMFRR
–
1.8
–
kΩ
Uniform external magnetic field
–
40
–
dB
Primary Hall Coupling Factor
G1
TA = 25°C
–
11
–
G/A
Secondary Hall Coupling Factor
G2
TA = 25°C
–
2.8
–
G/A
Sensmatch
Hall plate Sensitivity Matching
TA = 25°C
–
±1
–
%
Rise Time
tr
IP = IP(max), TA = 25°C, CL = 1 nF
–
3
–
μs
Propagation Delay
tpd
IP = IP(max), TA = 25°C, CL = 1 nF
–
2
–
μs
tRESPONSE
Response Time
IP = IP(max), TA = 25°C, CL = 1 nF
–
4
–
μs
Bandwidth
BW
Small signal –3 dB; CL = 1 nF
–
120
–
kHz
Noise Density
IND
Input referenced noise density;
TA = 25°C, CL = 1 nF
–
200
–
µA(rms)/
√Hz
Noise
IN
Input referenced noise: CF = 4.7 nF,
CL = 1 nF, BW = 18 kHz, TA = 25°C
–
27
–
mA(rms)
–1.5
–
+1.5
%
Nonlinearity
ELIN
Through full range of IP
Sensitivity Ratiometry Coefficient
SENS_RAT_
COEF
VCC = 3.0 to 3.6 V, TA = 25°C
–
1.3
–
–
Zero Current Output Ratiometry Coefficient
QVO_RAT_
COEF
VCC = 3.0 to 3.6 V, TA = 25°C
–
1
–
–
VOH
RL = 4.7 kΩ
–
VCC – 0.3
–
V
VOL
RL = 4.7 kΩ
–
0.3
–
V
tPO
Output reaches 90% of steady-state
level, TA = 25°C, IP = IPR(max) applied
–
80
–
μs
Saturation Voltage [3]
Power-On Time
Shorted Output to Ground Current
Isc(gnd)
TA = 25°C
–
3.3
–
mA
Shorted Output to VCC Current
Isc(vcc)
TA = 25°C
–
45
–
mA
[1] Device
may be operated at higher primary current levels, IP , ambient temperatures, TA , and internal leadframe temperatures, provided the Maximum Junction Temperature, TJ(max), is not exceeded.
[2] R
F(int) forms an RC circuit via the FILTER pin.
[3] The sensor IC will continue to respond to current beyond the range of I until the high or low saturation voltage; however, the nonlinearity in this region will be worse than
P
through the rest of the measurement range.
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
6
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-05AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
–5
–
5
A
IPR(min) < IP < IPR(max)
–
264
–
mV/A
Unidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2.5
±0.9
2.5
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.9
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–15
±5
15
mV
IP = 0 A; TA = –40°C to 25°C
–30
±15
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
Sens
VIOUT(Q)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Offset Voltage
Esens
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
xLLCTR-10AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
–10
–
10
A
IPR(min) < IP < IPR(max)
–
132
–
mV/A
Unidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.8
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.8
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±4
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±15
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
Sens
VIOUT(Q)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS
Sensitivity Error
Offset Voltage
Esens
VOE
[3]
ETOT = ESENS + 100 x VOE/(Sens x IP)
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
7
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-10AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
0
–
10
A
IPR(min) < IP < IPR(max)
–
264
–
mV/A
Unidirectional; IP = 0 A
–
VCC ×
0.1
–
V
IP = IPR(max); TA = 25°C to 150°C
–2.5
±0.9
2.5
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–2
±0.9
2
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–15
±5
15
mV
IP = 0 A; TA = –40°C to 25°C
–30
±15
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
Sens
VIOUT(Q)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Offset Voltage
Esens
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
xLLCTR-20AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
0
–
20
A
IPR(min) < IP < IPR(max)
–
132
–
mV/A
Unidirectional; IP = 0 A
–
VCC ×
0.1
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.8
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.8
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±4
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
Sens
VIOUT(Q)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Offset Voltage
Esens
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
8
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-20AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
–20
–
20
A
–
66
–
mV/A
Bidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.8
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.8
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±4
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
Sens
VIOUT(Q)
IPR(min) < IP < IPR(max)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS
Sensitivity Error
Esens
Offset Voltage
VOE
[3]
ETOT = ESENS + 100 x VOE/(Sens x IP)
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
[1]
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[2] Percentage
[3] A single
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
9
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-30AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
–30
–
30
A
–
44
–
mV/A
Bidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.7
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.7
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±3
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
Sens
VIOUT(Q)
IPR(min) < IP < IPR(max)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Esens
Offset Voltage
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
[1]
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[2] Percentage
[3] A single
xLLCTR-30AB-H PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
–30
–
30
A
Sens
IPR
IPR(min) < IP < IPR(max)
–
44
–
mV/A
VIOUT(Q)
Bidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.7
2
%
IP = IPR(max); TA = –40°C to 25°C
–2
±1.5
2
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.7
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–1.5
±1
1.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±3
10
mV
IP = 0 A; TA = –40°C to 25°C
–10
±6
10
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Offset Voltage
Esens
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
Allegro MicroSystems
955 Perimeter Road
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10
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-30AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
0
–
30
A
IPR(min) < IP < IPR(max)
–
88
–
mV/A
Unidirectional; IP = 0 A
–
VCC ×
0.1
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±0.8
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±0.8
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±4
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
Sens
VIOUT(Q)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS
Sensitivity Error
Offset Voltage
Esens
VOE
[3]
ETOT = ESENS + 100 x VOE/(Sens x IP)
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
xLLCTR-40AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
–40
–
40
A
Sens
IPR
IPR(min) < IP < IPR(max)
–
33
–
mV/A
VIOUT(Q)
Bidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±1
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±1
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±3
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Esens
Offset Voltage
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
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11
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
xLLCTR-50AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
–50
–
50
A
–
26.4
–
mV/A
Bidirectional; IP = 0 A
–
VCC ×
0.5
–
V
IP = IPR(max); TA = 25°C to 150°C
–2
±1
2
%
IP = IPR(max); TA = –40°C to 25°C
–6
±4
6
%
IP = IPR(max); TA = 25°C to 150°C
–1.5
±1
1.5
%
IP = IPR(max); TA = –40°C to 25°C
–5.5
±4
5.5
%
IP = 0 A; TA = 25°C to 150°C
–10
±3
10
mV
IP = 0 A; TA = –40°C to 25°C
–30
±5
30
mV
Esens_drift
–3
±1
3
%
Etot_drift
–3
±1
3
%
NOMINAL PERFORMANCE
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
Sens
VIOUT(Q)
IPR(min) < IP < IPR(max)
ACCURACY PERFORMANCE
Total Output Error [2]
ETOT
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 x VOE/(Sens x IP)
Sensitivity Error
Esens
Offset Voltage
VOE
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Typical values with ± are 3 sigma values
of IP , with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[1]
[2] Percentage
Allegro MicroSystems
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12
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
CHARACTERISTIC PERFORMANCE
ACS725 TYPICAL FREQUENCY RESPONSE
ACS725 Frequency Response
Magnitude [dB]
5
0
-5
-10
10 1
10 2
10 3
10 4
10 5
10 4
10 5
Frequency [Hz]
50
Phase [°]
0
-50
-100
-150
10 1
10 2
10 3
Frequency [Hz]
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Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
APPLICATION INFORMATION
Estimating Total Error vs. Sensed Current
Here, ESENS and VOE are the ±3 sigma values for those error
terms. If there is an average sensitivity error or average offset
voltage, then the average Total Error is estimated as:
The Performance Characteristics tables give distribution (±3
sigma) values for Total Error at IPR(max); however, one often
wants to know what error to expect at a particular current. This
can be estimated by using the distribution data for the components of Total Error, Sensitivity Error, and Offset Voltage. The
±3 sigma value for Total Error (ETOT) as a function of the sensed
current (IP) is estimated as:
2
Total Error (% of Current Measured)
ETOT (IP) = ESENS +
(
100 × VOE
Sens × IP
ETOTAVG (IP) = ESENSAVG +
100 × VOEAVG
Sens × IP
The resulting total error will be a sum of ETOT and ETOT_AVG.
Using these equations and the 3 sigma distributions for Sensitivity Error and Offset Voltage, the Total Error vs. sensed current
(IP) is below for the ACS725LLCTR-20AB. As expected, as one
goes towards zero current, the error in percent goes towards infinity due to division by zero.
2
)
8
6
-40ºC + 3σ
4
-40ºC – 3σ
2
25ºC + 3σ
0
25ºC – 3σ
-2
85ºC + 3σ
-4
85ºC – 3σ
-6
-8
0
5
10
15
20
Current (A)
Figure 1: Predicted Total Error as a Function of the Sensed Current for the ACS725LLCTR-20AB
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14
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
Thermal Rise vs. Primary Current
ASEK724/5 Evaluation Board Layout
Self-heating due to the flow-off 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.
Thermal data shown in Figure 2 was collected using the
ASEK724/5 Evaluation Board (TED-85-0740-003). This board
includes 1500 mm2 of 2 oz. copper (0.0694 mm) connected to
pins 1 and 2, and to pins 3 and 4, with thermal vias connecting
the layers. Top and bottom layers of the PCB are shown below in
Figure 3.
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 2 shows the measured rise in steady-state die
temperature of the ACS725 versus DC input current at an ambient temperature, TA, of 25 °C. The thermal offset curves may be
directly applied to other values of TA.
Figure 2: Self Heating in the LA Package
Due to Current Flow
The thermal capacity of the ACS725 should be verified by the
end user in the application’s specific conditions. The maximum
junction temperature, TJ(MAX) (165°C), 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.
Figure 3: Top and Bottom Layers
for ASEK724/5 Evaluation Board
Gerber files for the ASEK724/5 evaluation board are available for
download from our website. See the technical documents section
of the ACS725 device webpage.
Allegro MicroSystems
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15
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
DEFINITIONS OF ACCURACY CHARACTERISTICS
Sensitivity (Sens). The change in sensor IC output in response to
a 1 A change through the primary conductor. The sensitivity is the
product of the magnetic circuit sensitivity (G / A) (1 G = 0.1 mT)
and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sensitivity
(mV/A) for the full-scale current of the device.
Nonlinearity (ELIN). The nonlinearity is a measure of how linear
the output of the sensor IC is over the full current measurement
range. The nonlinearity is calculated as:
VIOUT(IPR(max)) – VIOUT(Q)
ELIN = 1–
• 100(%)
2 • VIOUT(IPR(max)/2) – VIOUT(Q)
Increasing
VIOUT (V)
Accuracy at
25°C Only
IPR(min)
ETOT (IP) =
+IP (A)
VIOUT(Q)
–IP (A)
Full Scale IP
IPR(max)
0A
Accuracy at
25°C Only
Decreasing
VIOUT (V)
Accuracy Across
Temperature
Figure 4: Output Voltage versus Sensed Current
+ETOT
Offset Voltage (VOE). The deviation of the device output from
its ideal quiescent value of 0.5 × VCC (bidirectional) or 0.1 × VCC
(unidirectional) due to nonmagnetic causes. To convert this voltage to amperes, divide by the device sensitivity, Sens.
Total Output Error (ETOT). The difference between the current measurement from the sensor IC and the actual current (IP),
relative to the actual 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 flowing
through the primary conduction path:
Accuracy at
25°C Only
Ideal VIOUT
Accuracy Across
Temperature
where VIOUT(IPR(max)) is the output of the sensor IC with the
maximum measurement current flowing through it and
VIOUT(IPR(max)/2) is the output of the sensor IC with half of the
maximum measurement current flowing through it.
Zero Current Output Voltage (VIOUT(Q)). The output of the
sensor when the primary current is zero. For a unipolar supply
voltage, it nominally remains at 0.5 × VCC for a bidirectional
device and 0.1 × VCC for a unidirectional device. For example, in
the case of a bidirectional output device, VCC = 3.3 V translates
into VIOUT(Q) = 1.65 V. Variation in VIOUT(Q) can be attributed to
the resolution of the Allegro linear IC quiescent voltage trim and
thermal drift.
Accuracy Across
Temperature
Across Temperature
25°C Only
–IP
+IP
VIOUT_ideal(IP) – VIOUT (IP)
• 100 (%)
Sensideal(IP) • IP
The Total Output Error incorporates all sources of error and is a
function of IP . At relatively high currents, ETOT will be mostly
due to sensitivity error, and at relatively low currents, ETOT will
be mostly due to Offset Voltage (VOE ). In fact, at IP = 0, ETOT
approaches infinity due to the offset. This is illustrated in Figure
4 and Figure 5. Figure 4 shows a distribution of output voltages
versus IP at 25°C and across temperature. Figure 5 shows the corresponding ETOT versus IP .
–ETOT
Figure 5: Total Output Error versus Sensed Current
Allegro MicroSystems
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Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
Sensitivity Ratiometry Coefficient (SENS_RAT_COEF). The
coefficient defining how the sensitivity scales with VCC. The
ideal coefficient is 1, meaning the sensitivity scales proportionally with VCC. A 10% increase in VCC results in a 10% increase
in sensitivity. A coefficient of 1.1 means that the sensitivity
increases by 10% more than the ideal proportionality case. This
means that a 10% increase in VCC results in an 11% increase in
sensitivity. This relationship is described by the following equation:
Sens(VCC ) = Sens(3.3 V) 1 +
(VCC – 3.3 V) • SENS_RAT_COEF
3.3 V
This can be rearranged to define the sensitivity ratiometry coefficient as:
SENS_RAT_COEF =
Sens(VCC )
3.3 V
–1 •
(V
Sens(3.3 V)
CC – 3.3 V)
Zero Current Output Ratiometry Coefficient (QVO_RAT_
COEF). The coefficient defining how the zero current output
voltage scales with VCC. The ideal coefficient is 1, meaning the
output voltage scales proportionally with VCC, always being
equal to VCC/2. A coefficient of 1.1 means that the zero current
output voltage increases by 10% more than the ideal proportionality case. This means that a 10% increase in VCC results in an
11% increase in the zero current output voltage. This relationship
is described by the following equation:
VIOUTQ(VCC ) = VIOUTQ(3.3 V) 1 +
(VCC – 3.3 V) • QVO_RAT_COEF
3.3 V
This can be rearranged to define the zero current output ratiometry coefficient as:
QVO_RAT_COEF =
VIOUTQ(VCC )
3.3 V
–1 •
(VCC – 3.3 V)
VIOUTQ(3.3 V)
Allegro MicroSystems
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17
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
DEFINITIONS OF DYNAMIC RESPONSE CHARACTERISTICS
Power-On Time (tPO). When the supply is ramped to its operating voltage, the device requires a finite time to power its internal
components before responding to an input magnetic field.
Power-On Time, tPO , 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, after the power supply has reached its
minimum specified operating voltage, VCC(min), as shown in the
chart at right.
V
VCC
VCC(typ.)
VIOUT
90% VIOUT
VCC(min.)
t1
t2
tPO
t1= time at which power supply reaches
minimum specified operating voltage
t2= time at which output voltage settles
within ±10% of its steady state value
under an applied magnetic field
0
Rise Time (tr). The time interval between a) when the sensor IC
reaches 10% of its full scale value, and b) when it reaches 90%
of its full scale value. The rise time to a step response is used to
derive the bandwidth of the current sensor IC, in which ƒ(–3 dB)
= 0.35 / tr. Both tr and tRESPONSE are detrimentally affected by
eddy current losses observed in the conductive IC ground plane.
Propagation Delay (tpd ). The propagation delay is measured
as the time interval a) when the primary current signal reaches
20% of its final value, and b) when the device reaches 20% of its
output corresponding to the applied current.
(%)
90
Figure 6: Power-On Time (tPO)
t
Primary Current
VIOUT
Rise Time, tr
20
10
0
Propagation Delay, tpd
t
Figure 7: Rise Time (tr) and Propagation Delay (tpd)
Response Time (tRESPONSE). The time interval between a) when
the primary current signal reaches 90% of its final value, and b)
when the device reaches 90% of its output corresponding to the
applied current.
(%)
90
Primary Current
VIOUT
Response Time, tRESPONSE
0
Figure 8: Response Time (tRESPONSE)
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t
18
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
ACS725
PACKAGE OUTLING DRAWING
For Reference Only – Not for Tooling Use
(Reference MS-012AA)
Dimensions in millimeters – NOT TO SCALE
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
8°
0°
4.90 ±0.10
8
0.25
0.17
NNNNNNN
3.90 ±0.10
6.00 ±0.20
PPT-AAA
LLLLL
A
1.04 REF
1
1
2
B
1.27
0.40
0.25 BSC
SEATING PLANE
Branded Face
0.10
1.75 MAX
C
0.51
0.31
SEATING
PLANE
A
0.25
0.10
1.27 BSC
1.27
0.65
Package Outline
Terminal #1 mark area
B
Branding scale and appearance at supplier discretion
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.
1.27
0.65
8
8
1.27
5.60
7.35
4.20
1.75
7.35
1.575
1
C
N = Device part number
P = Package Designator
T = Device temperature range
A = Amperage
L = Lot number
Belly Brand = Country of Origin
GAUGE PLANE
C
8X
Standard Branding Reference View
2
PCB Layout Reference View 1
Slot in PCB to maintain
4.2 mm creepage once
part is on PCB
1
C
2
PCB Layout Reference View 2
For PCB assemblies that cannot support a slotted design,
the above stretched footprint may be used.
Figure 9: Package LC, 8-Pin SOICN
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19
ACS725
Automotive-Grade, Galvanically Isolated Current Sensor IC
with Common-Mode Field Rejection in a Small Footprint SOIC8 Package
Revision History
Number
Change
Pages
Responsible
Date
–
Initial Release
All
A. Latham
January 19, 2015
1
Added ACS725LLCTR-20AU-T to Selection Guide and Performance
Characteristics charts, and corrected Sensitivity Error;
added xLLCTR-20AU Characteristic Performance charts.
2, 6-8,
10
A. Latham
September 28, 2015
2
Added ACS725LLCTR-30AU-T to Selection Guide and Performance
Characteristics charts.
2, 8
A. Latham
December 11, 2015
3
Added ACS725LLCTR-50AB-T to Selection Guide and Performance
Characteristics charts.
2, 9
W. Bussing
March 17, 2017
4
Added AEC-Q100 qualified status
1
W. Bussing
June 28, 2017
5
Added ACS725LLCTR-05AB-T and ACS725LLCTR-10AB-T to Selection Guide
and Performance Characteristics charts.
2, 5
M. McNally
November 15, 2017
6
Updated Clearance and Creepage rating values
3
W. Bussing
January 10, 2018
Added Dielectric Surge Strength Test Voltage characteristic
2
Added Common Mode Field Rejection Ratio characteristic
5
W. Bussing
January 23, 2018
8
Updated PCB Layout References in Package Outline Drawing
20
W. Bussing
March 19, 2018
9
Added Typical Frequency Response plots
16
W. Bussing
June 22, 2018
10
Added “Thermal Rise vs. Primary Current” and “ASEK724/5 Evaluation Board
Layout” to the Applications Information section
18
W. Bussing
July 3, 2018
11
Added ACS725LLCTR-30AB-T-H to Selection Guide and Performance
Characteristic charts.
2, 9, 15
M. McNally
July 30, 2018
12
Updated certificate numbers
1
V. Mach
December 13, 2018
13
Updated TUV certificate mark
1
M. McNally
June 3, 2019
14
Added ACS725LLC-20AB-T-H to Selection Guide and Performance Characteristics
charts
W. Bussing
December 20, 2019
7
Removed Characteristic Plots
2, 8
12-17
15
Updated Functional Block Diagram
4
K. Hampton
February 1, 2021
16
Updated Comparative Tracking Index to Isolation Characteristics table
3
E. Shorman
July 7, 2021
17
Added -S lead-free part variants; removed ACS725LLCTR-20AB-T-H part variant;
merged Selection Guides into one table and added footnote; minor editorial
updates
1–4, 9
K. Hampton
May 16, 2022
Copyright 2022, 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
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