INA296B2QDRQ1

Overview

The INA296B2QDRQ1 is a bidirectional current-sense amplifier from Texas Instruments, designed for high-precision measurements in automotive and industrial environments. It operates with a common-mode voltage range of -5 V to 110 V, independent of supply voltage. The device features a fixed gain of 20 V/V, a 1.1 MHz bandwidth, and a maximum input offset voltage of 150 µV. It is AEC-Q100 qualified and housed in an SOIC-8 package.

Feature Summary

• Supports bidirectional current sensing across a wide -5 V to 110 V common-mode voltage range
• Provides ultra-precise measurement capabilities with low gain error and drift specifications
• Features a 1.1 MHz signal bandwidth suitable for fast transient detection and overcurrent protection

Applications

• Automotive battery management systems
• High-side or low-side current monitoring in DC-DC converters
• Motor control and drive circuits

Procurement Notes

Verify the specific suffix 'QDRQ1' confirms AEC-Q100 automotive qualification and SOIC-8 packaging. Ensure compatibility with system requirements for a 20 V/V gain setting. Confirm that the -40°C to +125°C operating temperature range meets environmental constraints. Cross-reference datasheet electrical characteristics against design margins.

Selection Notes

Select this component when bidirectional sensing is required within a -5 V to 110 V common-mode window. The 20 V/V gain suits applications needing moderate amplification without excessive output swing limitations. Consider the 150 µV max offset voltage for precision needs lower than the 'A' grade but higher cost sensitivity. Verify thermal performance at maximum ambient temperatures.

Part Context

This part belongs to the INA296x family of ultra-precise, bidirectional current-sense amplifiers. The 'B' designation indicates specific accuracy grades compared to other variants. The 'Q1' suffix denotes automotive reliability compliance. It complements the INA241 series by offering higher precision and wider common-mode voltage tolerance.

Replacement Considerations

INA296B2IDR: Non-automotive version with identical electrical specifications and SOIC-8 package. INA296A2IDR: Higher precision variant with lower offset voltage (3 µV) and gain of 20 V/V. INA296B4QDRQ1: Automotive equivalent with different gain (100 V/V). Verify pinout compatibility and gain requirements before substitution.