INA4181A2IPWR

Instrumentation, Op Amps, Buffer Amps Overview

The INA4181A2IPWR is a quad-channel, bidirectional current-sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports common-mode voltages up to 26 V. The device features a gain bandwidth product of 350 kHz and a fixed gain of 50 V/V. Key electrical specifications include an input offset voltage of 100 µV, a maximum gain error of 0.1%, and an input bias current of 75 µA. It functions reliably across an extended temperature range from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Supports bidirectional current sensing for both high-side and low-side configurations
• Provides rail-to-rail output capability for full dynamic range utilization
• Integrates four independent channels in a single compact package

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive battery management systems
• Industrial motor control circuits
• Power distribution units

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'A2' against official datasheets to confirm the exact gain setting, as variations exist within the family. Ensure the TSSOP-20 package matches your PCB footprint requirements. Confirm RoHS compliance status with the manufacturer before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when multiple isolated or shared ground current monitoring points are required in a dense layout. The quad-channel architecture reduces board space compared to discrete solutions. Verify that the 50 V/V gain aligns with your signal conditioning needs to maximize ADC resolution without saturation.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA4181 series of automotive-grade current-sense amplifiers. It shares core architectural similarities with the INA181 and INA2181 families but offers integrated multi-channel functionality. The device is designed for applications requiring robust performance in electric vehicle and industrial power environments.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible substitutes may include other quad-channel variants from the same family, such as the INA4180, provided the gain and channel count match. Verify thermal characteristics and package dimensions before substitution.