INA296A2IDR

Overview

The INA296A2IDR is a bidirectional current sense amplifier from Texas Instruments, featuring a fixed gain of 20 V/V. It operates with a common-mode voltage range of -5V to 110V and supports a supply voltage between 2.7V and 20V. The device offers a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical characteristics include a maximum gain error of ±0.01%, an input offset voltage of ±3µV, and a typical CMRR of 166dB. It draws 2.5mA of quiescent current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Ultra-precise architecture providing low offset voltage and minimal gain drift for high accuracy measurements
• Wide common-mode voltage range independent of the power supply voltage
• High-speed response with 1.1MHz bandwidth and fast settling time for transient detection

Applications

• 48V DC/DC converters
• 48V battery management systems (BMS)
• Test & measurement equipment
• Macro remote radio units (RRU)
• 48V rack server power supplies

Procurement Notes

Verify the specific suffix ID indicates the SOIC-8 package variant. Confirm the A2 designation corresponds to the 20V/V gain option. Ensure compatibility with the required operating temperature range and common-mode voltage levels for the target application circuit design.

Selection Notes

Select this component when precise bidirectional current monitoring is required in high-voltage environments. The 20V/V gain suits applications needing moderate amplification of shunt voltages. Consider the 1.1MHz bandwidth for fast overcurrent protection loops. Evaluate thermal performance in the SOIC-8 package for the specific PCB layout constraints.

Part Context

This part belongs to the INA296x family of ultra-precise, bidirectional current sense amplifiers. The series includes variants with gains ranging from 10V/V to 200V/V and different accuracy grades (A and B). The INA296A2 specifically provides the 20V/V gain option within the higher precision 'A' grade tier.

Replacement Considerations

INA296A1IDR (10V/V gain), INA296A3IDR (50V/V gain), INA296B2IDR (20V/V gain, lower precision).