INA296A2QDRQ1

Overview

The INA296A2QDRQ1 is a bidirectional, ultra-precise current-sense amplifier from the Texas Instruments INA296A series. It operates with a common-mode voltage range of -5 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 bandwidth product of 1.1 MHz, and a typical CMRR of 150 dB. Key electrical parameters include an input bias current of 35 uA, an input offset voltage of 3 uV, and a maximum gain error of 0.002%. It consumes 2.5 mA of operating current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional current measurement across a wide common-mode voltage range of -5 V to 110 V.
• Delivers ultra-precision performance with low input offset voltage and minimal gain error for accurate sensing.
• Provides high-speed signal processing with a 1.1 MHz bandwidth suitable for fast transient detection.

Applications

• High-voltage DC current monitoring in automotive systems
• Fast overcurrent protection circuits requiring rapid response
• Transient detection in power distribution units

Procurement Notes

Verify that the specific part number suffix matches the required gain and package configuration. Confirm AEC-Q100 qualification status if the application mandates automotive reliability standards. Ensure the ordering code corresponds to the correct moisture sensitivity level and reel specifications for surface-mount assembly processes.

Selection Notes

Select this component when a fixed 20 V/V gain is optimal for the shunt resistor value and output dynamic range. Consider the 1.1 MHz bandwidth for applications requiring fast settling times. Evaluate the -5 V to 110 V common-mode range against the system's highest potential voltage to ensure safe operation without exceeding limits.

Part Context

This device belongs to the INA296A family of super-precision bidirectional current-sense amplifiers. It shares core architectural features with other variants in the series, such as the INA296A3QDRQ1 and INA296A4QDRQ1, differing primarily in fixed internal gain settings. The QDRQ1 suffix indicates automotive-grade qualification and an SOIC-8 package.

Replacement Considerations

Direct substitutes within the same family include INA296A1QDRQ1 (10 V/V), INA296A3QDRQ1 (50 V/V), and INA296A4QDRQ1 (100 V/V). Non-automotive equivalents like INA296A2IDR share similar electrical characteristics but lack AEC-Q100 certification.