INA240A1QDRQ1

Instrumentation, Op Amps, Buffer Amps Overview

The INA240A1QDRQ1 is a unidirectional high-side current sense amplifier from Texas Instruments, designed for automotive applications under AEC-Q100 qualification. It features a gain of 20 V/V and supports a common-mode voltage range from -4 V to 80 V. The device operates on a single supply voltage between 2.7 V and 5.5 V with a typical quiescent current of 1.8 mA. Key electrical specifications include a maximum input offset voltage of 5 µV, an input bias current of 90 µA, and a gain error of 0.05%. It offers a 3dB bandwidth of 400 kHz and a CMRR of 132 dB. The component is housed in an 8-SOIC package and functions within a temperature range of -40°C to 125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Supports bidirectional current sensing with a wide common-mode voltage range extending from negative voltages up to 80 V.
• Delivers ultra-precise measurement performance characterized by low input offset voltage and minimal gain error.
• Engineered for robust operation in harsh automotive environments with extended industrial temperature ratings.

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive battery management systems
• High-side current monitoring in electric vehicle powertrains
• Motor control circuits requiring precise current feedback

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix QDRQ1 confirms AEC-Q100 automotive qualification and SOIC-8 packaging. Ensure compatibility with system voltage levels and thermal requirements. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Validate that the selected variant matches the required gain configuration for the target application design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high accuracy is required in high-side sensing applications with significant common-mode voltages. The 20 V/V gain suits scenarios where small differential signals need amplification for ADC processing. Consider the 400 kHz bandwidth for dynamic load monitoring. Verify that the 8-SOIC package fits the available PCB footprint and thermal dissipation constraints.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA240 family of current sense amplifiers, which are optimized for precision measurements in demanding environments. The QDRQ1 designation indicates automotive-grade reliability and specific packaging. It complements other variants in the series that offer different gains or packages, providing designers with flexible options for various current sensing architectures.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct replacements within the same family include INA240A1DRG4 for non-automotive use or INA240A1EDRQ1 if EIAJ package compatibility is needed. Verify pinout and electrical parameters match exactly before substitution. Cross-reference with INA240A2QDRQ1 or INA240A3QDRQ1 only if gain adjustments are acceptable.