INA190A3IRSWR

Overview

The INA190A3IRSWR is a unidirectional current sense amplifier from Texas Instruments, housed in a 10-UQFN package. It features a fixed gain of 100 V/V and supports a common-mode voltage range from -200 mV to 40 V. The device operates on a supply voltage between 1.7 V and 5.5 V with a typical quiescent current of 65 uA. Key electrical specifications include an input offset voltage of -3 uV, a common-mode rejection ratio of 150 dB, and a gain error of -0.06%. It provides a bandwidth of 35 kHz and maintains operation across a temperature range of -40°C to +125°C.

Feature Summary

• Provides high-precision current monitoring with ultra-low input offset voltage for accurate low-side and high-side measurements.
• Supports bidirectional sensing capabilities within a wide common-mode voltage range up to 40 V.
• Delivers exceptional common-mode rejection performance to maintain signal integrity in noisy environments.

Applications

• Battery management systems
• Industrial process control
• Power supply output monitoring

Procurement Notes

Verify the specific suffix IR against the manufacturer's official documentation to confirm the exact tape-and-reel quantity and packaging configuration. Ensure the component matches the required RoHS compliance status and lead-free specifications as defined in the latest datasheet revision. Cross-reference the ordering part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a fixed gain of 100 V/V aligns with system requirements for translating shunt voltages into readable ADC inputs. The 10-UQFN package is suitable for applications requiring compact surface-mount footprints. Consider the 40 V common-mode limit and 5.5 V maximum supply voltage to ensure compatibility with the target circuit topology and operating conditions.

Part Context

This device belongs to the INA190 family of zero-drift current sense amplifiers designed for precision measurement applications. The series emphasizes accuracy through chopper stabilization techniques, minimizing drift over temperature variations. The INA190A3 variant specifically denotes the fixed gain configuration and accuracy grade, distinguishing it from other gain options within the broader product line.

Replacement Considerations

Check for direct pin-compatible alternatives within the same INA190 family or upgraded models like the INA190A4 if higher accuracy is needed. Verify that any substitute maintains the 10-UQFN footprint and similar electrical characteristics such as gain and common-mode range.