INA296A2IDGKR

Overview

The INA296A2IDGKR is a bidirectional current sense amplifier from Texas Instruments featuring a 20V/V fixed gain. It operates with a common-mode voltage range of -5V to 110V and withstands survival voltages up to 120V. The device utilizes a zero-drift architecture, providing a maximum offset voltage of ±3µV and a typical CMRR of 166dB. It offers a small-signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Powered by a single supply between 2.7V and 20V, it draws 2.5mA quiescent current and is housed in an 8-pin VSSOP package.

Feature Summary

• Ultra-precise bidirectional measurement capability enabled by zero-drift input topology
• Wide common-mode voltage range independent of the power supply voltage
• High-speed signal processing with 1.1MHz bandwidth and fast settling time
• Configurable output reference via dedicated REF1 and REF2 pins

Applications

• 48V DC/DC converter current monitoring
• 48V battery management systems (BMS)
• Macro remote radio unit (RRU) power regulation
• 48V rack server power distribution
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix IDGKR corresponds to the 8-pin VSSOP package variant during procurement. Confirm that the A2 designation matches the required 20V/V gain for the target circuit design. Ensure the component meets the specified operating temperature range of -40°C to +125°C for the intended environment. Cross-reference the datasheet revision history for any recent updates to electrical characteristics or pin configurations before finalizing orders.

Selection Notes

Select this component when high precision is required across wide common-mode voltages exceeding the supply rail. The 20V/V gain is suitable for applications requiring moderate amplification of shunt voltages. Consider the 1.1MHz bandwidth for transient detection needs. Evaluate the 8-pin VSSOP package dimensions against available PCB space constraints. Compare performance metrics against other gain options within the INA296x family if different amplification factors are needed.

Part Context

This device belongs to the INA296x series of ultra-precise current sense amplifiers designed for high-voltage applications. The series includes multiple gain variants (10V/V to 200V/V) and versions (A and B) with varying accuracy specifications. The INA296A2 specifically provides the 20V/V gain option within the higher precision 'A' version category, distinguishing it from the standard 'B' version and other gain configurations.

Replacement Considerations

INA296A2IDR: Same gain and features but in an SOIC-8 package instead of VSSOP-8.