Current Sense Amplifier 1 Circuit Single-Ended SOT-23-6
The INA187A3IDBVR is a precision high-side and low-side current sense amplifier designed for accurate bidirectional current measurement in power management, motor control, battery monitoring, and industrial sensing applications. The device integrates a matched precision gain stage optimized for shunt resistor voltage amplification while maintaining excellent common-mode rejection and low offset drift. It supports wide common-mode input voltages, enabling current monitoring across supply rails in automotive, industrial, and embedded systems. The amplifier features fast response characteristics, low quiescent current consumption, and a compact surface-mount package suitable for space-constrained designs.
Engineering Specification
Device Type
Precision Current Sense Amplifier
Manufacturer
Texas Instruments
Manufacturer Part Number
INA187A3IDBVR
Amplifier Configuration
Current shunt monitor with fixed gain
Gain Variant
High fixed gain configuration optimized for low-value shunt resistor sensing
Input Measurement Capability
Bidirectional current sensing
Common-Mode Voltage Range
Supports high-side and low-side sensing across wide supply rails
Input Offset Characteristics
Low offset voltage with low temperature drift for accurate current measurement
Bandwidth Performance
Wide bandwidth suitable for dynamic load and transient current monitoring
Response Time
Fast settling and propagation performance for real-time current feedback systems
Power Supply Requirements
Single-supply operation compatible with low-voltage logic systems
Output Type
Analog voltage output proportional to sensed shunt voltage
Common-Mode Rejection
High common-mode rejection ratio for stable operation in noisy environments
Temperature Performance
Industrial operating temperature range with stable gain accuracy over temperature
Protection Features
Robust input structure designed for high common-mode environments
Package Type
SOT-23 surface-mount package
Mounting Method
Surface mount technology
Typical Applications
Battery management systems, power distribution monitoring, motor current feedback, DC/DC converter monitoring, industrial automation, telecom power systems, and embedded power diagnostics.
