INA181A3IDBVR

Overview

The INA181A3IDBVR is a bidirectional, low- and high-side voltage output current-sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports a common-mode input voltage from -0.2 V to 26 V. The device features a fixed gain of 100 V/V, a bandwidth of 350 kHz, and a maximum gain error of 0.1%. Key electrical specifications include an input offset voltage of 100 µV, a common-mode rejection ratio of 84 dB, and a quiescent current of 195 µA. It is housed in a SC-70-6 package.

Feature Summary

• Supports bidirectional current sensing for both low-side and high-side monitoring applications
• Provides accurate differential voltage output proportional to shunt resistor drop
• Operates with wide common-mode voltage range extending below ground potential

Applications

• Battery management systems
• Load switch control circuits
• Overcurrent protection designs

Procurement Notes

Verify the specific suffix IDBVR corresponds to the SC-70-6 surface-mount package configuration. Confirm that the A3 grade meets the required gain accuracy specifications for the target application. Ensure compatibility with the system's common-mode voltage levels before integration.

Selection Notes

Select this component when bidirectional sensing capability is required alongside high common-mode voltage tolerance up to 26 V. The fixed 100 V/V gain simplifies design calculations compared to adjustable variants. Consider the SC-70-6 footprint constraints and thermal performance requirements during layout planning.

Part Context

This part belongs to the INA181 family of current-sense amplifiers designed for precision measurement. It shares architectural similarities with the INA180 but adds bidirectional functionality. The device integrates internal precision resistors to maintain consistent gain across operating conditions.

Replacement Considerations

INA181A3IDCKR offers identical electrical characteristics in a different SC-70-6 variant package.