INA190A5IRSWT

Overview

The INA190A5IRSWT is a bidirectional, ultraprecise current sense amplifier manufactured by Texas Instruments. It features a fixed gain of 200 V/V and supports a common-mode voltage range from -200 mV to 40 V. The device operates on a single supply voltage between 1.7 V and 5.5 V with a typical quiescent current of 65 uA. Key electrical specifications include a maximum input offset voltage of 3 uV, an input bias current of 500 pA, and an input offset current of 70 pA. It offers a common-mode rejection ratio (CMRR) of 150 dB and a gain bandwidth product of 33 kHz. The component is housed in a 10-UQFN package and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides high-precision current monitoring with ultra-low input offset voltage and picoampere-level input bias current for minimal measurement error.
• Supports bidirectional current sensing with a wide common-mode voltage range extending below ground potential down to -200 mV.
• Delivers exceptional common-mode rejection performance to maintain accuracy in noisy environments with high common-mode voltages.

Applications

• Battery management systems requiring precise cell or pack current monitoring
• Industrial process control loops involving shunt-based current feedback
• Power supply output current regulation and protection circuits

Procurement Notes

Verify the specific suffix IRSWT confirms the UQFN-10 package and industrial temperature grade. Confirm the A5 variant corresponds to the 200 V/V gain setting as specified in official datasheets. Check for end-of-life status or obsolescence notices from Texas Instruments before finalizing procurement plans. Ensure compatibility with available development kits such as the INA190EVM for validation purposes.

Selection Notes

Select this component when bidirectional sensing is required alongside high precision in a compact footprint. The 200 V/V gain is suitable for applications where the shunt voltage drop is small but requires significant amplification. Consider the 10-UQFN package constraints for PCB layout compared to larger packages like SOT-23-8 or SC70-6 found in other INA190 variants.

Part Context

This part belongs to the INA190 family of current sense amplifiers designed for low-power, high-accuracy applications. Unlike the INA190A5IDCKT which uses a SC70-6 package, or the INA190A5IDDFR using SOT-23-8, the IRWSWT variant utilizes a 10-UQFN package. It shares the same core amplifier architecture but differs in physical dimensions and pinout configuration relative to other members of the series.

Replacement Considerations

Direct substitutes within the same family include INA190A5IDCKT and INA190A5IDDFR, though these differ in package type (SC70-6 and SOT-23-8 respectively). Verify that the alternative package fits the existing PCB footprint or allows for re-layout. Ensure the gain factor remains 200 V/V if replacing with other A5 variants.