INA190A1IRSWT

Overview

The INA190A1IRSWT is a single-channel, bidirectional current sense amplifier from Texas Instruments. It operates with a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. Key electrical parameters include a gain of 200 V/V, input bias current of 500 pA, and input offset voltage of -3 µV. The device features a gain-bandwidth product of 33 kHz, a CMRR of 150 dB, and a quiescent current of 65 µA. It functions within an operating temperature range of -40°C to +125°C and is housed in a 10-UQFN package.

Feature Summary

• Ultra-precise zero-drift architecture ensuring high accuracy for sensitive measurements
• Bidirectional sensing capability allowing detection of current flow in both directions
• High common-mode rejection ratio for reliable performance in noisy environments

Applications

• Battery management systems
• Load switch control circuits
• Overcurrent protection designs

Procurement Notes

Verify the specific suffix 'WT' against the manufacturer's official documentation to confirm packaging details and availability status. Cross-reference the full part number with the latest datasheet to ensure compliance with RoHS standards and lead time requirements before procurement.

Selection Notes

Select this component when high precision and low drift are critical for bidirectional current monitoring. Ensure the required gain matches the 200 V/V specification and that the 10-UQFN package fits the board layout constraints. Verify that the 40 V common-mode voltage range aligns with the system's power rail specifications.

Part Context

This device belongs to the INA190 family of ultra-precise, bidirectional current shunt monitors. The series is designed for applications requiring accurate DC and low-frequency AC current measurement. The A1 grade indicates specific offset voltage and gain error tolerances defined by the manufacturer.

Replacement Considerations

Check for updated versions or alternative grades within the INA190 series if the current part is obsolete. Verify pin compatibility and electrical parameter overlaps with any proposed substitutes.