INA4181A4QPWRQ1

Instrumentation, Op Amps, Buffer Amps Overview

The INA4181A4QPWRQ1 is an automotive-grade, quad-channel bidirectional current-sense amplifier featuring low- and high-side voltage output. It operates with a supply voltage range of 2.7 V to 5.5 V and supports common-mode voltages up to 26 V. The device offers a gain bandwidth product of 350 kHz and includes fixed gains of 20 V/V, 50 V/V, 100 V/V, and 200 V/V. It provides a minimum common-mode rejection ratio of 84 dB and maintains a maximum gain error of 1%. Designed for harsh environments, it functions within a temperature range of -40°C to 125°C and is housed in a 14-TSSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Quad-channel architecture enabling simultaneous multi-rail monitoring
• Bidirectional sensing capability supporting both low-side and high-side configurations
• Voltage output interface compatible with standard analog-to-digital converters

Instrumentation, Op Amps, Buffer Amps Applications

• Electric vehicle battery management systems
• Motor control drive circuits
• Industrial power distribution units
• Charging station infrastructure

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'QPWRQ1' to confirm automotive grade classification and TSSOP packaging. Ensure the design accounts for the 26 V common-mode limit. Cross-reference the gain variant against system requirements. Confirm RoHS compliance status through official documentation before integration.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when multiple independent current channels are required in space-constrained automotive designs. The quad configuration reduces board area compared to discrete solutions. Verify that the 350 kHz bandwidth meets the dynamic response needs of the target application circuitry.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA4181 family of current-sense amplifiers from Texas Instruments. It shares functional similarities with the INA4180 series but distinguishes itself through bidirectional operation capabilities. The family targets high-reliability applications requiring precise current monitoring across multiple rails.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The INA4180A4QPWRQ1 serves as a related alternative within the same package. Verify if unidirectional operation suffices for the application. Check compatibility with existing PCB footprints and thermal management strategies.