INA241A5QDGKRQ1

Overview

The INA241A5QDGKRQ1 is an AEC-Q100 qualified, bidirectional current sense amplifier with a fixed gain of 200 V/V. It operates over a common-mode voltage range of -5V to 110V and supports supply voltages from 2.7V to 20V. Key electrical specifications include a maximum input offset voltage of ±8µV, a typical DC CMRR of 166dB, and a small-signal bandwidth of 1.1MHz. The device features enhanced PWM rejection for switching systems up to 125kHz and operates within a temperature range of -40°C to 125°C.

Feature Summary

• Enhanced PWM rejection circuitry minimizes output disturbances caused by large common-mode voltage transients in high-frequency switching environments.
• Ultra-precise measurement capability achieved through low input offset voltage and high DC common-mode rejection ratio.
• Bidirectional operation allows accurate current sensing across the full common-mode voltage range independent of the supply voltage.

Applications

• Electric power steering (EPS)
• eTurbo/charger systems
• Starter/generator applications

Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the VSSOP-8 package and reel packaging configuration required for your assembly process. Confirm that the 'Q1' designation aligns with your automotive functional safety documentation requirements. Ensure the operating temperature grade matches your system's thermal constraints.

Selection Notes

Select this component when a high gain of 200 V/V is necessary to amplify small shunt resistor voltage drops. The wide common-mode range supports high-side or inline configurations where the sense voltage exceeds the local supply rail. The bidirectional nature is essential for regenerative braking or motor drive applications requiring reverse current detection.

Part Context

This part belongs to the INA241x-Q1 family of ultra-precise current sense amplifiers designed for automotive use. It shares the same core architecture and pinout as other gain variants in the series, differing primarily in internal feedback networks that set the fixed gain. The Q1 suffix indicates compliance with AEC-Q100 standards for automotive reliability.

Replacement Considerations

Other members of the INA241A-Q1 family offer different fixed gains (10V/V, 20V/V, 50V/V, 100V/V) but maintain identical pinouts and performance characteristics otherwise. Verify that the alternative gain meets your signal conditioning requirements before substitution.