INA210CIRSWR

Overview

The INA210CIRSWR is a single-channel current shunt monitor from Texas Instruments, featuring a zero-drift architecture for high precision. It operates with a supply voltage range of 2.7 V to 26 V and supports bidirectional current sensing. The device offers a fixed gain of 200 V/V, a gain bandwidth product of 14 kHz, and a common-mode voltage range up to 12 V. Key electrical specifications include an input offset voltage of 550 nV, a common-mode rejection ratio of 140 dB, and a maximum operating temperature of +125°C. It is housed in a UQFN-10 package.

Feature Summary

• Zero-drift architecture ensures low offset voltage for accurate measurement of small shunt voltages.
• Bi-directional capability allows detection of current flow in both directions across the shunt resistor.
• High common-mode rejection ratio provides robust performance in noisy environments.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops
• Power supply overcurrent protection circuits

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature grade (-40°C to +85°C) versus the 'I' industrial grade (-40°C to +125°C) as listed in other variants like INA210AIRSWT. Confirm package availability and lead times directly with authorized distributors, as end-of-life status may affect long-term supply for this specific revision.

Selection Notes

Select this component when a fixed 200 V/V gain is required for high-side or low-side current sensing applications. Ensure the system's common-mode voltage does not exceed 12 V. Compare against the INA210B series if higher accuracy (lower gain error) is needed, or the INA211/INA212 series if different gain factors are preferred.

Part Context

This part belongs to the INA21x family of voltage-output, bi-directional, zero-drift current-shunt monitors. These devices are designed to sense voltage drops across shunt resistors with minimal drift over temperature, making them suitable for applications demanding high DC accuracy without frequent calibration.

Replacement Considerations

The INA210CIRSWT is a verified substitute offering the same functional parameters but rated for the wider industrial temperature range (-40°C to +125°C). Verify that the thermal requirements of the application align with the commercial grade of the CIRSWR variant before substituting.