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INA187A3QDBVRQ1

TIINA187A3QDBVRQ1

Texas Instruments
Current Sense Amplifier 1 Circuit Differential SOT-23-6
Active8,271 in stock
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Overview

The INA187A3QDBVRQ1 is an automotive-qualified, AEC-Q100 Grade 1 current sense amplifier designed for high-accuracy bidirectional current monitoring. It features a high common-mode rejection ratio and a wide input voltage range from -2V to 42V, making it suitable for low-side and high-side sensing in 12V automotive systems.

Why Choose This Part

This amplifier offers excellent precision with a low 0.25 percent accuracy error and a fast 2.5V/us slew rate. Its low 650uA quiescent current and SOT-23-6 package make it ideal for space-constrained, power-sensitive automotive electronic control units.

Applications

Electric Power Steering (EPS)
High-precision current monitoring for motor control feedback in steering assistance systems.
Body Control Modules (BCM)
Monitoring current flow to automotive lighting, wipers, and window actuators for overcurrent protection.
Battery Management Systems (BMS)
Precise measurement of charging and discharging currents in secondary battery systems.
ADAS Sensor Power Monitoring
Ensuring stable power delivery to radar and camera modules by monitoring supply rail current.

Key Specifications

Slew Rate 2.5V/us
Output Type Differential
Mounting Type Surface Mount
-3db Bandwidth 400 kHz
Amplifier Type Current Sense
Package / Case SOT-23-6
Current - Supply 950uA
Number of Circuits 1
Current - Input Bias 13 uA
Operating Temperature -40degC ~ 125degC (TA)
Voltage - Input Offset 150 uV
Supplier Device Package SOT-23-6
Voltage - Supply Span (Max) 12 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To evaluate this part, use the TI INA187EVM evaluation module which provides test points for input and output signals. Ensure shunt resistor placement is as close as possible to the IN+ and IN- pins to minimize trace resistance errors in the 400 kHz bandwidth signal path.

Also Consider

INA180-Q1 TITexas Instruments - A cost-optimized automotive alternative for applications that do not require bidirectional sensing or functional safety capability.
MAX44284 Maxim Integrated / Analog Devices - Provides ultra-low power consumption for battery-operated subsystems requiring high-side sensing.