INA241B1QDGSRQ1

Overview

The INA241B1QDGSRQ1 is a bidirectional current sense amplifier from the Texas Instruments INA241B series, designed for automotive applications with AEC-Q100 qualification. It features a gain of 10 V/V and supports a common-mode voltage range from -5 V to 100 V. Key electrical parameters include a maximum input offset voltage of 150 uV, an input bias current of 35 uA, and a CMRR of 150 dB. The device operates on a supply voltage between 2.7 V and 20 V, consuming 3.2 mA of quiescent current. It offers a 3dB bandwidth of 1100 kHz and a gain error of 0.1%. Housed in a VSSOP-10 package, it functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional current sensing with high common-mode voltage tolerance up to 100 V
• Provides high precision measurement with low input offset voltage and high CMRR
• Qualified for automotive environments under AEC-Q100 standards

Applications

• Automotive battery management systems
• Motor control circuits
• High-side or low-side current monitoring in vehicle electronics

Procurement Notes

Verify the specific suffix QDGSRQ1 corresponds to the VSSOP-10 package and automotive grade. Confirm AEC-Q100 certification status for your application requirements. Check datasheet for humidity sensitivity level and recommended soldering profiles. Ensure supply voltage limits are respected during operation.

Selection Notes

Select this component when bidirectional sensing is required with a common-mode voltage exceeding standard ground references. The 10 V/V gain suits applications needing moderate signal amplification. Consider the 150 uV max Vos for high-precision needs. Compare against INA241B2 variants if higher gain or different packaging is preferred.

Part Context

Part of the INA241B family of current sense amplifiers. Designed for robust performance in noisy automotive environments. Offers improved accuracy over previous generations with enhanced CMRR and lower noise density.