INA190A3IRSWT

Overview

The INA190A3IRSWT is a bidirectional, ultraprecise current sense amplifier from Texas Instruments. It features a gain of 100 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. The device supports a common-mode voltage range from -200 mV to 40 V. Key electrical specifications include a maximum input offset voltage of 3 µV, an input bias current of 500 pA, and a gain error of 0.06%. It offers a common-mode rejection ratio of 150 dB and a bandwidth of 35 kHz. The component is housed in a UQFN-10 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional sensing capability for both high-side and low-side current monitoring applications
• Ultraprecise performance characterized by minimal input offset voltage and low input bias current
• High common-mode rejection ratio ensuring accurate measurements across wide voltage ranges

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops with high accuracy demands
• Power supply output current limiting and regulation

Procurement Notes

Verify the specific suffix IRSWT to confirm the UQFN-10 package type and tape-and-reel delivery format. Confirm that the A3 grade matches the required precision specifications for your design. Check manufacturer lifecycle status as some variants may be subject to obsolescence notices. Ensure compatibility with your PCB footprint dimensions for the specified surface-mount package.

Selection Notes

Select this part when bidirectional current measurement is required alongside high precision. The 100 V/V gain suits applications where the shunt voltage drop is small relative to the common-mode voltage. Consider the UQFN-10 package for space-constrained designs. Evaluate the 35 kHz bandwidth against noise filtering requirements in your specific circuit topology.

Part Context

This component belongs to the INA190 family of current sense amplifiers designed for high-accuracy applications. The series emphasizes zero-drift technology to maintain stability over temperature variations. The A3 designation indicates a specific precision grade within the lineup, distinguishing it from standard or enhanced product variants.