INA241A2QDGSRQ1

Overview

The INA241A2QDGSRQ1 is a bidirectional current-sensing amplifier from Texas Instruments, designed for automotive applications under AEC-Q100 standards. It operates with a common-mode voltage range of -4 V to 110 V and supports a supply voltage between 2.7 V and 20 V. The device features a fixed gain of 20 V/V, a gain error of 0.02%, and a bandwidth of 1.1 MHz. Key electrical specifications include an input offset voltage of 50 µV, a CMRR of 120 dB, and a quiescent current of 2.5 mA. It is housed in an 8-pin VSSOP package.

Feature Summary

• Supports bidirectional current sensing with high common-mode voltage tolerance up to 110 V
• Provides high precision with low gain error and high common-mode rejection ratio
• Optimized for automotive environments with AEC-Q100 qualification

Applications

• Automotive battery management systems
• High-side current monitoring in electric vehicles
• Motor control circuits requiring bidirectional measurement

Procurement Notes

Verify the specific suffix QDGSRQ1 matches the required automotive grade and tape-and-reel packaging configuration. Confirm that the AEC-Q100 certification status aligns with your project's reliability requirements. Ensure the VSSOP-8 footprint corresponds to your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when bidirectional sensing is required within a wide common-mode voltage range exceeding standard operational amplifiers. The fixed 20 V/V gain simplifies design by reducing external resistor requirements. Consider the 1.1 MHz bandwidth for applications needing faster response times compared to lower-bandwidth alternatives.

Part Context

This part belongs to the INA241 family of current-sense amplifiers. The 'A' indicates a specific gain accuracy grade, while '2' denotes the 20 V/V gain setting. The 'Q' prefix signifies automotive qualification, and 'DGSR' identifies the VSSOP-8 package with reel packaging. This series targets robust industrial and automotive power monitoring solutions.

Replacement Considerations

Check datasheets for compatible parts like INA241B2QDGKRQ1 for higher precision grades or other INA241 variants with different gain settings. Ensure pin compatibility and thermal performance match when substituting.