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.

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