INA240A2EDRQ1

Overview

The INA240A2EDRQ1 is a high-precision, bi-directional zero-drift current sense amplifier designed for automotive applications. It features a fixed gain of 50 V/V and supports a common-mode voltage range from -4 V to 80 V. Key electrical parameters include an input offset voltage of 5 µV, a maximum supply current of 2.4 mA, and a 3 dB bandwidth of 400 kHz. The device operates within a temperature range of -40°C to +125°C and is housed in an 8-SOIC package.

Feature Summary

• Bi-directional zero-drift architecture ensures high accuracy across the operating temperature range.
• Enhanced PWM rejection capability allows reliable operation in noisy switching environments.
• Wide common-mode voltage range supports both high-side and low-side sensing configurations.

Applications

• Automotive battery management systems
• Motor control circuits
• High-side current monitoring

Procurement Notes

Verify the specific suffix 'EDRQ1' against official Texas Instruments documentation to confirm the exact package variant and automotive qualification status. Ensure compatibility with AEC-Q100 standards required for your target application environment before finalizing procurement decisions.

Selection Notes

Select this component when precise bi-directional current measurement is required in automotive systems with high common-mode voltages. The fixed 50 V/V gain simplifies signal conditioning, while the zero-drift technology minimizes calibration needs compared to standard amplifiers.

Part Context

This part belongs to the INA240 family of current sense amplifiers. The 'Q1' suffix indicates AEC-Q100 automotive qualification, while 'E' typically denotes a specific thermal or mechanical variant within the SOIC-8 package line. It complements other variants like the INA240A1 and INA240A3 which offer different gain settings.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified devices from the same family, such as the INA240A2QPWRQ1, provided the TSSOP-8 package is acceptable. Verify pinout compatibility and gain specifications when considering cross-package replacements.