INA2181A1QDGSRQ1

Overview

The INA2181A1QDGSRQ1 is an automotive-grade bidirectional current-sense amplifier certified to AEC-Q100 standards. It features a fixed gain of 50 V/V and supports bidirectional current sensing with low-side and high-side voltage outputs. The device operates within a supply voltage range of 2.7 V to 5.5 V, consuming 195 µA of quiescent current. Key electrical specifications include a maximum input offset voltage of 100 µV, a bandwidth of 350 kHz, and a slew rate of 2 V/µs. It is housed in a compact SC-70-6 package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Bidirectional current sensing capability with both low-side and high-side voltage output options for flexible system integration.
• Automotive qualification compliant with AEC-Q100 standards, ensuring reliability for demanding vehicle environments.
• High precision performance characterized by a low input offset voltage of 100 µV and a fixed gain of 50 V/V.

Applications

• Battery management systems in electric and hybrid vehicles
• Motor control circuits requiring precise current monitoring
• High-side or low-side load switching protection

Procurement Notes

Verify the specific suffix 'QDGSRQ1' against the official Texas Instruments datasheet to confirm the exact package type, tape-and-reel quantity, and automotive grade designation. Ensure that the ordering information matches the required pin configuration and thermal characteristics for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability.

Selection Notes

Select this component when bidirectional current measurement is required in automotive applications with strict space constraints. The SC-70-6 package offers a small footprint suitable for dense layouts. Consider the 50 V/V gain and 350 kHz bandwidth for applications needing moderate speed and high accuracy. Verify that the 5.5 V maximum supply voltage aligns with your system's power rails.

Part Context

This device belongs to the INA181-Q1 family of current-sense amplifiers designed for automotive use. It provides a cost-effective solution for monitoring current in battery and motor control applications. The family is known for its ability to operate in both high-side and low-side configurations while maintaining high common-mode rejection ratios.

Replacement Considerations

Check for other members of the INA181-Q1 series with different gain settings or packages. Non-automotive equivalents like the standard INA181 may lack AEC-Q100 certification. Verify pin compatibility and electrical parameters before substituting any alternative components.