INA210CIRSWT

Overview

The INA210CIRSWT is a current shunt monitor from the Texas Instruments Zero-Drift series. It features a fixed gain of 200 V/V and supports bidirectional measurement with high or low-side sensing capabilities. The device operates within a supply voltage range of 2.7 V to 26 V and draws a typical operating supply current of 100 µA. Key electrical specifications include a maximum input offset voltage of 550 nV, an input bias current of 28 µA, and a common-mode rejection ratio of 140 dB. It functions reliably across an industrial temperature range of -40°C to +125°C and is housed in a UQFN-10 package.

Feature Summary

• Zero-drift architecture minimizes offset voltage drift over temperature for high precision
• Bi-directional operation enables accurate current monitoring in both directions
• Supports both high-side and low-side current sensing configurations
• Fixed internal gain eliminates the need for external resistors

Applications

• Industrial process control systems
• Power management circuits
• Battery management systems
• Overcurrent protection designs

Procurement Notes

Verify the specific suffix 'C' against the official datasheet to confirm the exact grade and temperature rating, as variations exist within the family. Confirm the UQFN-10 package availability and check for end-of-life status or obsolescence notices on the manufacturer's website before finalizing procurement plans.

Selection Notes

Select this component when high accuracy is required without external calibration due to its zero-drift technology. It is suitable for applications needing a fixed gain solution that simplifies board layout by removing external gain-setting resistors. Ensure the design accommodates the specified common-mode voltage limits and power supply requirements.

Part Context

This part belongs to the INA210 series of current-shunt monitors designed for precision measurements. The series utilizes chopper-stabilized amplifiers to achieve very low offset voltages. The CIRSWT designation indicates a specific commercial/industrial grade variant in a small outline quad flat no-lead package, targeting space-constrained electronic designs.

Replacement Considerations

Direct replacements within the same family include the INA210AIRSWT and INA210IDRSWT. Verify pin compatibility and thermal performance when substituting. Cross-family alternatives like the INA199 series may offer different gain options but require evaluation of offset characteristics.