MPQ8112/MPQ8112A
60V, High-Side Current-Sense Amplifier,
AEC-Q100 Qualified
DESCRIPTION
FEATURES
The MPQ8112 and MPQ8112A are low-cost,
unipolar, high-side current-sense amplifiers.
The devices operate from a 2.7V to 60V supply
and typically consume a 300µA current. They
are ideal for today’s automotive systems,
industrial supplies, and systems where
battery/DC current monitoring is critical.
High-side current monitoring is especially useful
in battery-powered systems, since it does not
interfere with the ground path of the battery
charger. The common mode input ranges
between 0V and 60V with a 700kHz high
bandwidth. That makes these devices suitable
for use in inside control and short-circuit
protection loops.
The MPQ8112 directly converts a differential
input voltage to a voltage output with built-in
internal common input resistors and a load
resistor. The MPQ8112 has a 50V/V gain.
The MPQ8112A converts the differential input
voltage to a current output. This current is
converted back to a voltage with an external
load resistor. The MPQ8112A has an
adjustable gain based on the external common
input resistors and load resistor.
Both the MPQ8112 and MPQ8112A
available in TSOT23-6L packages.
are
Low-Cost, Compact Current-Sense Solution
700kHz Bandwidth
300µA Typical Supply Current
2.7V to 60V Operating Supply Voltage
0V to 60V Common Mode Input Range
0.2µA Typical Shutdown Current
300µV Input Offset Voltage
Available with Fixed 50V/V Gain
(MPQ8112), or Adjustable Gain
(MPQ8112A)
±1% Current-Sense Gain Accuracy
High-Current Sensing Capabilities
Available in a 6-Lead TSOT23 Package
Available in AEC-Q100 Grade 1
APPLICATIONS
Advanced Driver Assistance Systems
(ADAS)
Sensor Fusion Systems
Electric Power Steering (EPS) Systems
Electronic Stability Control (ESC) Systems
Brake Systems
Battery-Operated Systems
Energy Management Systems
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MPQ8112 FAMILY VERSIONS
Part Number
Output Gain
MPQ8112
50V/V
MPQ8112A
Adjustable
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
TYPICAL APPLICATIONS
0V
VCM
RSENSE
VCC
To Load
ISENSE
RG2
RG1
MPQ8112
GND
V5
VCC
OUT
VOUT
2.7V To 60V
VOUT = 50 x ISENSE x RSENSE
Figure 1: MPQ8112 (Voltage Output)
0V
VCM
VCC
RSENSE
To Load
RG1
RG2
ISENSE
RG1
RG2
MPQ8112A
GND
2.7V To 60V
VCC
V5
OUT
IOUT
ROUT
VOUT = ISENSE x RSENSE / RG1 x GM x ROUT
Figure 2: MPQ8112A (Current Output)
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
ORDERING INFORMATION
Part Number*
MPQ8112GJ-AEC1
MPQ8112AGJ-AEC1
Package
TSOT23-6L
TSOT23-6L
Top/Bottom Markings
See Below
See Below
MSL Rating**
1
* For Tape & Reel, add suffix –Z (e.g. MPQ8112GJ-AEC1–Z).
** Moisture Sensitivity Level Rating
TOP MARKING
Part Number
Top Marking
Bottom Marking
Definitions
MPQ8112GJ-AEC1
AXD: Product code
Y: Year code
C: Suffix
LLL: Lot number
MPQ8112AGJ-AEC1
BML: Product code
Y: Year code
LLLL: Lot number
PACKAGE REFERENCE
OUT 1
6
RG2 2
5 GND
RG1 3
4
V5
VCC
TSOT23-6L
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
PIN FUNCTIONS
Pin #
Name
1
OUT
2
RG2
3
RG1
4
VCC
5
GND
6
V5
Description
Output. The MPQ8112 does not require an external resistor, so the OUT pin can be left
floating. For the MPQ8112A, connect an external resistor to OUT to set the gain.
Negative gain resistor. For the MPQ8112, connect RG2 directly to the load side of the
current-sense resistor, as closely as possible. For the MPQ8112A, connect RG2 to the load
side of the current-sense resistor through a gain resistor (RG2). RG2 should be below 4kΩ to
obtain high current-sense accuracy. It is recommended for RG2 and RG1 to equal 1kΩ.
Positive gain resistor. For the MPQ8112, connect RG1 directly to the power side of the
current-sense resistor, as closely as possible. For the MPQ8112A, connect RG1 to the
power side of the current-sense resistor through a gain resistor (RG1). RG1 should be below
4kΩ to obtain the high current-sense accuracy. It is recommended for RG1 to equal 1kΩ.
Power input. Place a bypass capacitor between VCC and GND, as close as possible. A
0.1µF to 1µF low-ESR ceramic capacitor is recommended.
Ground.
Power supply for internal trim and control block. Pull V5 above its 2V upper threshold to
enable the part. Pull V5 below its 1.9V lower threshold to disable the part. The power
source connected to V5 must be able to output a current above 1mA. Place a bypass
capacitor between V5 and GND. A 10nF to 100nF low-ESR ceramic capacitor is
recommended.
θJA
θJC
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (5)
VCC to GND ..................................-0.3V to +62V
RG1, RG2 to GND ......................... -0.3V to VCC
VCC to RG1, RG2 .........................-0.3V to +62V
OUT to GND ............ -0.3V to +22V (MPQ8112)
OUT to GND ............ -0.3V to VCC (MPQ8112A)
Differential input voltage (VRG1 - VRG2)... ±400mV
V5 to GND .....................................-0.3V to +6V
Max junction temperature .........................150°C
Storage temperature ................ -65°C to +150°C
Continuous power dissipation (TA = 25°C) (2)
TSOT23-6L .............................................. 0.57W
TSOT23-6L ............................ 220 .... 110.. °C/W
ESD Ratings (3)
Human body model (HBM).........................±2kV
Charged device model (CDM)..................±750V
Recommended Operating Conditions
Vcc to GND ...................................... 2.7V to 60V
RG1, RG2 to GND ...............................0V to VCC
VCC to RG1, RG2 ............................... 0V to 60V
OUT to GND ................... 0V to 20V (MPQ8112)
OUT to GND ....... 0V to VCC - 0.7V (MPQ8112A)
Operating junction temp (TJ)..............................
………………………………...-40°C to +125°C (4)
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature, TJ (MAX), the junction-toambient thermal resistance, θJA, and the ambient temperature,
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) These devices are ESD-sensitive. It is recommended to
handle them with precaution.
4) It is possible to operate the devices at junction temperatures
above 125°C. Contact an MPS FAE for details.
5) The value of θJA given in this table is only valid for comparison
with other packages and cannot be used for design purposes.
These values were calculated in accordance with JESD51-7,
and simulated on a specified JEDEC board. They do not
represent the performance obtained in an actual application.
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
ELECTRICAL CHARACTERISTICS
VCC = 12V, VRG1 = 12V, TA = -40°C to +125°C, typical values at TJ = 25°C. RG1 = RG2 = 0Ω, and ROUT
not used for the MPQ8112. RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All unless
otherwise noted.
Parameter
Supply voltage
Common mode input
voltage
V5 supply voltage
Supply current
Symbol
Conditions
V
VCM
0
VCC
V
V5
2.7
5.5
V
360
µA
ICC + IV5
VSENSE = 0, VCC = 60V, V5 = 5V
Full-scale sense voltage
VSENSE
VSENSE = VRG1 - VRG2
Output voltage gain
Bandwidth (8)
Power supply rejection
ratio (9)
V5 upper threshold
voltage
V5 lower threshold
voltage
V5 shutdown supply
current
Output respond time (8)
Units
60
VSENSE = 100mV, VCC = 60V,
VCM1 = 60V, VCM2 = 22V
Current-sense gain
Max
2.7
CMR
Input bias current
Typ
VCC
Common mode input
rejection (6)
Input offset voltage (7)
Min
VOS
IRG1, IRG2
GM
AV
BW
300
65
90
dB
200
mV
VCM = 12V, VSENSE1 = 100mV,
VSENSE2 = 20mV
0.3
1
mV
VCM = 12V
0.25
1
µA
A/A
TJ = 25°C
TJ = -40°C to +125°C
4.95
4.9
5
5
5.05
5.1
MPQ8112, VSENSE = 100mV,
VCM = 12V, TJ = 25°C
49.5
50
50.5
MPQ8112, VSENSE = 100mV,
VCM = 12V, TJ = -40°C to +125°C
COUT = 5pF
VCC1 = 60V, VCC2 = 2.7V,
VSENSE = 24mV
V/V
49
50
51
700
kHz
70
80
dB
VTH_UPPER
1.3
2
2.5
V
VTH_LOWER
1.2
1.9
2.4
V
V5 = 1V
0.2
2
µA
RG1 = RG2 = 1kΩ, ROUT = 10kΩ,
VSENSE = 5mV to 100mV,
VOUT from 10% to 90%
500
PSRR
ICC(SHDN)
ns
RG1 = RG2 = 1kΩ, ROUT = 10kΩ,
VSENSE = 100mV to 5mV,
VOUT from 10% to 90%
500
Notes:
6)
7)
8)
9)
CMR = 20 x log[(VCM1 - VCM2) / (VOUT1 - VOUT2)]. VOUT1 is the output voltage at VCM1, and VOUT2 is the output voltage at VCM2.
VOS = VSENSE1 - VOUT1 / [(VOUT1 - VOUT2) / (VSENSE1 - VSENSE2)]. VOUT1 is the output voltage at VSENSE1, and VOUT2 is the output voltage at VSENSE2.
Not tested in production. Guaranteed by design and characterization.
PSRR = 20 x log[(VCC1 - VCC2) / (VOUT1 - VOUT2)]. VOUT1 is the output voltage at VCC1, and VOUT2 is the output voltage at VCC2.
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
TYPICAL CHARACTERISTICS
VCC = VRG1 = 12V, V5 = 5V, TJ = -40°C to +125°C, unless otherwise noted.
Supply Current vs. Temperature
Input Bias Current vs. Temperature
IQ = ICC + IV5
302
310
290
IQ (μA)
IRG1/IRG2 (nA)
300
298
270
250
230
210
190
296
-50
-25
0
25
50
75
100
-50
125
-25
TEMPERATURE (°C)
25
50
75
100
125
TEMPERATURE (°C)
V5 Shutdown Supply Current vs.
Temperature
V5 UVLO Threshold vs. Temperature
0.5
2.2
2.1
0.45
Rising
Falling
2.0
0.4
ICC(SHDN) (A)
V5 UVLO THRESHOLD (V)
0
1.9
1.8
1.7
0.35
0.3
0.25
0.2
1.6
0.15
0.1
1.5
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
-50
-25
0
25
50
75 100
TEMPERATURE (°C)
125
Current-Sense Gain vs. Temperature
5.04
GM (A/A)
5.02
5.00
4.98
4.96
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
TYPICAL PERFORMANCE CHARACTERISTIC (continued)
VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C. RG1 = RG2 = 0Ω, and ROUT not used for the MPQ8112.
RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All unless otherwise noted.
Total Output Error vs. VSENSE
Total Output Error vs. VSENSE
VCC = VCM
VCM = 0V
8
1.5
Vcc=VCM=12V
1
Vcc=VCM=48V
0.5
Vcc=VCM=60V
0
-0.5
6
ERROR (%)
ERROR (%)
2
-1
4
2
Vcc=12V
Vcc=48V
Vcc=60V
0
-1.5
-2
-2
0
25
50
75
100 125 150 175 200
0
25
50
VSENSE (mV)
75 100 125 150 175 200
VSENSE (mV)
Total Output Error vs. VSENSE
Total Output Error vs. VSENSE
VCC = VCM
VCM = 0V
2
8
1.5
6
ERROR (%)
ERROR (%)
1
0.5
0
-0.5
Ta=+25°C
Ta=+155°C
Ta=-55°C
-1
-1.5
-2
4
2
Ta=+25°C
Ta=+155°C
Ta=-55°C
0
-2
0
25
50
75 100 125 150 175 200
VSENSE (mV)
0
25
50
75 100 125 150 175 200
VSENSE (mV)
Gain vs. Frequency
COUT = 5pF
40
35
30
GAIN (dB)
25
20
15
10
5
0
-5
-10
0.1
1
10
100
1000
FREQUENCY (kHz)
10000
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C. RG1 = RG2 = 0Ω, and ROUT not used for the MPQ8112.
RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All unless otherwise noted.
Transient Response
Transient Response
VSENSE = 0mV to 100mV
VSENSE = 0mV to 200mV
CH2: VOUT
2V/div.
CH2: VOUT
2V/div.
1μs/div.
1μs/div.
Transient Response
VSENSE = 100mV to 200mV
CH2: VOUT
2V/div.
1μs/div.
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
FUNCTIONAL BLOCK DIAGRAMS
IRG1
RG1
ISENSE
Trim and
Control
RIN_1
V5
M1
1kΩ
1kΩ
RSENSE
RIN_2
IOUT
Current Mirror
GM = 5
RG2
RIN_OUT
10kΩ
VCC
OUT
VOUT
To Load
VCC
GND
Figure 3: MPQ8112 Functional Block Diagram
RG1 IRG1
Trim and
Control
RG1
ISENSE
V5
M1
RSENSE
RG2
OUT
Current Mirror
GM = 5
RG2
IOUT
ROUT
Vcc
To Load
VCC
GND
Figure 4: MPQ8112A Functional Block Diagram
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
OPERATION
The MPQ8112 and MPQ8112A are high-side
current-sense amplifiers with a wide 2.7V to 60V
operating input voltage (VCC) range. Their
common mode input voltage (VCM) is based on
VCC, with an operating range of 0 ≤ VCM ≤ VCC ≤
60V.
The MPQ8112 directly converts a differential
input voltage to a voltage output with built-in
internal common input resistors and a load
resistor. The MPQ8112 has a 50V/V gain.
The MPQ8112A converts the differential input
voltage to a current output. This current is
converted back to a voltage with an external load
resistor. The MPQ8112A has an adjustable gain
based on the external common input resistors
and load resistor.
Gain Setting
The sense current (ISENSE) flows through the
sense resistor (RSENSE), which generates a sense
voltage (VSENSE). The high-precision sense
amplifier built into the MPQ8112/MPQ8112A
monitors the differential voltage (VSENSE) and
dynamically adjusts the gate voltage of the
internal N-channel MOSFET (M1) to maintain an
equal passing current (IRG1). IRG1 is then
multiplied by a gain factor (GM) in the output
stage current mirror, and finally flows through
ROUT to generate VOUT.
The MPQ8112/MPQ8112A’s output (VOUT) can
be estimated with Equation (1):
VOUT = ISENSE x RSENSE / RG1 x GM x ROUT
(1)
Where GM is 5A/A, and RG1 and ROUT are external
resistors for the MPQ8112A. For the MPQ8112,
RG1 is instead RIN_1, and ROUT is instead RIN_OUT.
These values are 1kΩ and 10kΩ, respectively.
The total gain (AV) can be calculated with
Equation (2):
AV = VOUT / VSENSE = ROUT / RG1 x GM
(2)
The MPQ8112A’s gain is adjustable by selecting
different combinations of ROUT / RG1. The
MPQ8112’s gain is fixed to 50V/V, and set by the
internal resistors (RIN_1 and RIN_OUT).
VCC Supply
The VCC supply is the power source for the
internal input stage amplifier and output stage
current mirror circuitry. Use a bypass capacitor to
ensure stability. Apply a 0.1µF to 1µF low-ESR
ceramic capacitor between VCC and GND, as
close as possible. If the VCC power source is
noisy, additional capacitance may be required.
Common Input Voltage
The MPQ8112/MPQ8112A’s
ranges between 0V and VCC.
common
input
The minimum common input voltage is 0V. If the
common input voltage is below 1.2V, an internal,
dedicated compensation circuit is activated and
drives the M1 drain voltage high enough to make
the shunt current (IRG1) pass into the current
mirror. The compensation circuit can cause the
output error to rise when VCM is below 1.2V ( for
more information, see the Output Error vs. VSENSE
curves
in
the
Typical
Performance
Characteristics section on page 7).
It is recommended to ensure that the common
input voltage (VRG1) does not exceed VCC since
VRG1 is the positive input of the amplifier, which is
powered by VCC.
V5 Supply
V5 supplies the internal control block. It also
supplies the compensation circuit when the
common input voltage (VRG1 / VRG2) is low.
V5 can act like a digital control pin that turns the
current-sense amplifier on and off. If V5 is pulled
below its 1.9V lower threshold voltage, the chip
shuts down. If V5 is pulled above its 2V upper
threshold voltage, the part turns on.
In addition, if the common input voltage drops
below 1.2V, the compensation circuit is activated
and drives the M1 drain voltage high enough to
make the shunt current (IRG1) pass into the
current mirror. The compensation circuit
consumes 0.1mA to 1mA of current when it starts
to work. Therefore, V5 requires a lowimpendence power source and a 10nF to 100nF
ceramic bypass capacitor.
MPQ8112/MPQ8112A Rev. 1.0
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MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
APPLICATION INFORMATION
Setting the Output Voltage
The output voltage and gain of the MPQ8112A
can be calculated with Equation (1) and Equation
(2) on page 10.
The maximum output voltage (VOUT_MAX) is limited
by the power supply (VCC) and the maximum
output current (IOUT_MAX). Calculate VOUT_MAX with
Equation (3) and Equation (4), using the lower
value as the threshold:
VOUT_MAX = VCC - 0.7V
VOUT_MAX = ROUT x IOUT_MAX
(3)
(4)
Where IOUT_MAX is 2mA when V5 = 5V.
IOUT_MAX decreases as V5 ramps down. When V5
equals 2.7V, IOUT_MAX is approximately 1mA. It is
strongly recommended to connect V5 to a 5V
voltage source to achieve the widest VOUT range.
For the MPQ8112, the VOUT_MAX has an additional
limitation, in that the maximum voltage on the
built-in output resistor (RIN_OUT) is 20V. Compare
to the values obtained by Equation (3) and
Equation (4) to 20V, then use the lowest value as
the MPQ8112 VOUT_MAX threshold.
Selecting the Sensing Resistor
Given a full-scale sense current, select RSENSE so
that VSENSE does not exceed 200mV, which is the
maximum voltage for accuracy measurements.
To measure lower currents more accurately, use
a high RSENSE value. A higher value develops a
higher sense voltage, which overcomes offset
voltage errors on the internal current amplifier.
However, high RSENSE values also introduce high
losses. Ultimately, the RSENSE selection is a
tradeoff of accuracy and losses. In most
applications, choose an RSENSE value that
provides a full-scale VSENSE voltage range
between 50mV and 200mV.
In applications that monitor very high current,
ensure RSENSE is able to dissipate its own I2R
losses. If the resistor’s power rating is exceeded,
its value may drift or it may fail altogether,
causing a differential voltage across the terminals
in excess of the absolute maximum range (0.4V).
Selecting Common Input Resistors and
Output Resistors
The MPQ8112 has built-in common input and
output resistors and a fixed 50V/V gain. It does
not require external resistors.
Choose the MPQ8112A’s RG1/RG2 and ROUT to
provide VOUT with the appropriate full-scale
voltage range. Select RG2/RG2 first, and ensure
that they are below 4kΩ for a high current-sense
accuracy. RG1 = RG2 = 1kΩ is recommended.
Then ROUT can be calculated with Equation (5):
ROUT = VOUT / (ISENSE x RSENSE / RG1 x GM) (5)
VSENSE Over Maximum Rating Voltage
Protection
Figure 5 shows that the MPQ8112/MPQ8112A
has built-in back-to-back diodes between RG1
and RG2. These diodes have a typical clamping
voltage of ±400mV and a 100mA sink current
capacity. In fault conditions where VSENSE
exceeds 400mV or drops below -400mV, the
MPQ8112A avoids damage by designing the
external resistors (RG1 and RG2) to limit the backto-back diodes’ sink current below 100mA.
The MPQ8112 also avoids damage with external
resistors (RG1 and RG2), but its output gain and
accuracy are affected by the different
performance between the external and internal
resistors.
RG1
IRG1
ISENSE
RG1
RIN_1
1kΩ
RSENSE
RG2
RIN_2
1kΩ
IRG2
RG2
MPQ8112/MPQ8112A
MPQ8112 Only
To Load
Figure 5: Back-to-Back Diodes
The MPQ8112 gives a fixed gain of 50V/V; care
must be taken so that VSENSE does not exceed
400mV so that VOUT is out of its 20V limitation.
MPQ8112/MPQ8112A Rev. 1.0
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11
MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
PCB Layout Guidelines (10)
Efficient PCB layout, especially for the sensing
resistor and output resistor placement, affects
measurement accuracy. For the best results,
refer to Figure 6 and follow the guidelines below:
1. To minimize any resistance in series with
sensing resistor trace, connect the RG1 and
RG2 pins as close as possible to the sensing
resistor.
2. Connect the bypass capacitors close to the
device pins to decouple the power supply
noise.
Top Layer
Bottom Layer
Figure 6: Recommended PCB Layout
Note:
10) The recommended PCB layout is based on Figure 7.
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
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© 2020 MPS. All Rights Reserved.
12
MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
TYPICAL APPLICATION CIRCUITS
0V
VCM
VCC
RSENSE
To Load
ISENSE
3
RG2
RG1
2
MPQ8112
5
GND
V5
5V
6
C2
0.1μF
4
2.7V to 60V
VCC
OUT
1
VOUT
C1
1μF
VOUT = 50 x ISENSE x RSENSE
Figure 7: MPQ8112 (VCM ≤ VCC)
0V
VCM
VCC
RSENSE
To Load
ISENSE
RG1
1kΩ
RG2
1kΩ
3
RG1
RG2
2
MPQ8112A
5
GND
V5
6
5V
C2
0.1μF
2.7V To 60V
C1
1μF
4
VCC
OUT
1
VOUT
ROUT
10kΩ
VOUT = ISENSE x RSENSE /RG1 x GM x ROUT =
50 x ISENSE x RSENSE
Figure 8: MPQ8112A (AV = 50V/V with VCM ≤ VCC)
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
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© 2020 MPS. All Rights Reserved.
13
MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
TYPICAL APPLICATION CIRCUITS (continued)
RSENSE
To Load
ISENSE
RG1
1kΩ
RG2
1kΩ
3
RG2
RG1
2
MPQ8112A
5
GND
V5
5V
6
C2
0.1μF
4
2.7V to 60V
Vcc
OUT
1
VOUT
ROUT
5kΩ
C1
1μF
VOUT = ISENSE x RSENSE / RG1 x GM x ROUT =
50 x ISENSE x RSENSE
Figure 9: MPQ8112A (AV = 25V/V with VCM = VCC)
RSENSE
To Load
ISENSE
RG1
RG2
1kΩ
1kΩ
3
RG1
RG2
2
MPQ8112A
5
GND
V5
5V
6
C2
0.1μF
4
2.7V to 60V
C1
1μF
Vcc
OUT
1
VOUT
ROUT
VOUT
5kΩ
VOUT = ISENSE x RSENSE / RG1 x GM x ROUT =
50 x ISENSE x RSENSE
Figure 10: MPQ8112A (AV = 25V/V with Buffer to Limit VOUT_MAX < V5)
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
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© 2020 MPS. All Rights Reserved.
14
MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
PACKAGE INFORMATION
TSOT23-6L
See note 7
EXAMPLE
TOP MARK
PIN 1 ID
IAAAA
RECOMMENDED LAND PATTERN
TOP VIEW
SEATING PLANE
SEE DETAIL ''A''
FRONT VIEW
SIDE VIEW
NOTE:
DETAIL "A"
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION, OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AB.
6) DRAWING IS NOT TO SCALE.
7) PIN 1 IS THE LOWER-LEFT PIN WHEN READING THE TOP
MARK FROM LEFT TO RIGHT (SEE EXAMPLE TOP MARK).
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
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© 2020 MPS. All Rights Reserved.
15
MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER
CARRIER INFORMATION
ABCD
Pin1
1
ABCD
ABCD
ABCD
1
1
1
Feed Direction
Part Number
Package
Description
Quantity/
Reel
Quantity/
Tube
Quantity/
Tray
Reel
Diameter
Carrier
Tape
Width
Carrier
Tape
Pitch
TSOT23-6L
3000
N/A
N/A
7in
8mm
4mm
MPQ8112GJAEC1–Z
MPQ8112AGJAEC1–Z
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
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© 2020 MPS. All Rights Reserved.
16
MPQ8112, MPQ8112A60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
Revision History
Revision #
1.0
Revision
Date
7/7/2020
Description
Initial Release
Pages
Updated
-
Notice: The information in this document is subject to change without notice. Users should warrant and guarantee that thirdparty Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MPQ8112/MPQ8112A Rev. 1.0
www.MonolithicPower.com
7/7/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
17
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