INA240A1EDRQ1

Instrumentation, Op Amps, Buffer Amps Overview

The INA240A1EDRQ1 is an AEC-Q100 qualified, bidirectional ultra-precise current sense amplifier from Texas Instruments. It features a gain of 20 V/V and operates with a common-mode voltage range of -4 V to 80 V. The device offers a CMRR of 132 dB, input offset voltage of 5 uV, and gain error of 0.05%. It functions on a supply voltage of 2.7 V to 5.5 V, consuming 2.4 mA. The bandwidth is 100 kHz with a 3dB frequency of 400 kHz. It supports operating temperatures from -40°C to +150°C in an 8-SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional sensing capability for high-side current monitoring
• Ultra-precision performance with low offset voltage and high CMRR
• Automotive qualification compliant with AEC-Q100 standards
• Extended temperature operation suitable for harsh environments

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive battery management systems
• Motor control circuits
• High-side current sensing in power distribution units

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'EDRQ1' to confirm the automotive grade, SOIC-8 package, and 20 V/V gain configuration. Ensure compatibility with system requirements for common-mode voltage up to 80 V and supply voltage limits between 2.7 V and 5.5 V. Confirm that the extended temperature range meets the application's thermal constraints.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high accuracy and bidirectional sensing are required in automotive applications. The 20 V/V gain provides a balanced output swing for typical ADC interfaces. Consider the 8-SOIC package for space-constrained PCB layouts. Verify that the 132 dB CMRR is sufficient for the noise environment of the target circuit.

Instrumentation, Op Amps, Buffer Amps Part Context

Part of the INA240 family of zero-drift current sense amplifiers designed for precision measurement. The 'A1' designation indicates the 20 V/V gain variant, while 'EDRQ1' specifies the automotive qualification and surface-mount packaging. This series targets applications demanding high reliability and accuracy in dynamic current monitoring scenarios.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA240A1D is the non-automotive equivalent with identical electrical specifications but lacks AEC-Q100 certification. INA240A1EDRQ1 is the direct automotive-grade replacement for standard industrial versions requiring extended temperature and reliability validation.