INA190A4IRSWR

Overview

The INA190A4IRSWR is a unidirectional current shunt monitor manufactured by 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. The device features a fixed gain of 200 V/V, a gain error of 0.06%, and an input bias current of 500 pA. Key electrical specifications include a CMRR of 150 dB, an input offset voltage of 3 µV, and a bandwidth of 33 kHz. It consumes 65 µA of quiescent current and functions within a temperature range of -40°C to +125°C in a 10-UQFN package.

Feature Summary

• Provides high-precision current monitoring with ultra-low input bias current for minimal measurement impact.
• Supports bidirectional sensing capabilities across a wide common-mode voltage range up to 40 V.
• Delivers exceptional accuracy through low offset voltage and high common-mode rejection ratio.

Applications

• Battery management systems
• Power delivery circuits
• Overcurrent protection

Procurement Notes

Verify the specific suffix 'A4' confirms the required gain setting and accuracy grade before procurement. Ensure the IRSWR designation matches the intended surface-mount packaging requirements. Confirm that the component meets all necessary environmental and regulatory standards for the target application environment.

Selection Notes

Select this component when precise current monitoring is required in space-constrained designs. The 10-UQFN package offers a compact footprint suitable for dense PCB layouts. Consider the 200 V/V gain for applications requiring high resolution on small voltage drops across the shunt resistor.

Part Context

This part belongs to the INA190 family of zero-drift current sense amplifiers. The series is characterized by its ability to maintain high accuracy over temperature variations due to chopper stabilization techniques. It serves as a specialized solution for applications demanding precision in low-side or high-side current sensing configurations.

Replacement Considerations

INA190A4IRSWRT