INA241A1QDGSRQ1

Overview

The INA241A1QDGSRQ1 is a bidirectional, high-speed current sense amplifier from Texas Instruments, designed for automotive applications under AEC-Q100 qualification. It features a gain of 10 V/V and supports a common-mode voltage range from -5 V to 110 V. Key electrical parameters include a gain bandwidth product of 1.1 MHz, a common-mode rejection ratio of 150 dB, and an input bias current of 35 uA. The device operates on a supply voltage between 2.7 V and 20 V with a typical quiescent current of 2.5 mA. It offers ultra-precise performance with a gain error of 0.002% and an input offset voltage of 5 uV. The component is housed in an SOIC-8 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional measurement capability for accurate current sensing in both directions.
• High common-mode voltage tolerance up to 110 V for robust operation in harsh environments.
• Ultra-high precision with minimal gain error and low input offset voltage.
• Automotive-grade reliability certified under AEC-Q100 standards.

Applications

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

Procurement Notes

Verify the specific suffix QDGSRQ1 corresponds to the tape-and-reel packaging format required for your assembly line. Confirm that the AEC-Q100 qualification status meets your project's automotive reliability standards. Ensure the SOIC-8 package dimensions align with your PCB footprint design. Check for any moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when bidirectional current sensing is required in high-voltage automotive environments. The 10 V/V gain provides sufficient output swing for most ADC interfaces without external amplification. Consider the 1.1 MHz bandwidth for applications requiring fast transient response. The wide common-mode range simplifies high-side placement without complex level shifting.

Part Context

This part belongs to the INA241A family of ultra-precise current sense amplifiers. The 'Q' prefix indicates automotive qualification, while 'DGSR' specifies the SOIC-8 package and reel packaging. It complements other INA241 variants with different gains or packages, offering a balance of precision and speed for critical automotive power monitoring tasks.

Replacement Considerations

Direct substitutes include other INA241 variants with compatible gain and package, such as INA241A1DR or INA241A1DGR, provided automotive qualification is not strictly required. For non-automotive applications, standard INA241A1 devices may be considered. Verify pin compatibility and thermal characteristics before substitution.