INA190A2IRSWR

Overview

The INA190A2IRSWR is a unidirectional current shunt monitor manufactured by Texas Instruments. It features a fixed gain of 50 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. The device supports bidirectional sensing with a common-mode voltage range from -200 mV to 40 V, independent of the supply voltage. Key electrical specifications include a maximum input offset voltage of -3 µV, a typical input bias current of 500 pA, and a gain error of -0.06%. It offers a common-mode rejection ratio (CMRR) of 150 dB and a gain-bandwidth product of 37 kHz. The component consumes 65 µA of operating current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Utilizes zero-drift architecture to achieve ultra-low input offset voltage for high-precision measurements.
• Supports bidirectional current detection across a wide common-mode voltage range up to 40 V.
• Provides low input bias current to enable accurate measurement using larger sense resistors.

Applications

• Overcurrent protection in industrial systems
• Precision current monitoring for battery management
• Closed-loop feedback control circuits

Procurement Notes

Verify the specific suffix IR against official datasheets to confirm package type and temperature grade. Ensure compatibility with the target application's voltage requirements. Confirm RoHS compliance status through manufacturer documentation. Validate that the 10-UQFN footprint matches the design layout. Check for any recent production changes or lifecycle notices.

Selection Notes

Select this part when a fixed 50 V/V gain is required for precise current sensing. The low offset voltage allows for smaller sense resistors, reducing power loss. Verify that the 40 V common-mode range meets system bus voltage needs. Consider the UQFN-10 package size for space-constrained designs. Ensure the operating temperature range aligns with environmental conditions.

Part Context

This component belongs to the INA190 family of current shunt monitors designed for high-accuracy applications. The series provides multiple gain options to suit various sensing ranges. The A2 variant specifically sets the internal gain at 50 V/V. The IR suffix indicates a specific thermal and packaging configuration within the standard product line.

Replacement Considerations

INA190A2IDCKR: Same gain, different SC-70-6 package. INA190A2IDDFR: Same gain, different SOT-23-8 package. INA190A2NDDFREP: Enhanced product version with extended temperature range.