INA213CIRSWT

Overview

The INA213CIRSWT is a bidirectional, zero-drift current-shunt monitor from the Texas Instruments INA21x series. It features a fixed gain of 50 V/V and operates on a single supply voltage ranging from +2.7V to +26V. The device detects voltage drops across shunt resistors with a common-mode voltage range of -0.3V to 26V. It consumes a maximum of 100μA supply current and supports operation in temperatures from -40°C to +125°C. The component is housed in an SC-70 or thin UQFN package.

Feature Summary

• Zero-drift architecture ensures low offset for accurate sensing at full-scale voltages as low as 10mV
• Bidirectional capability allows detection of both positive and negative current flow
• Single-supply operation simplifies integration into various power systems

Applications

• High-side or low-side current monitoring in portable devices
• Battery management systems requiring precise charge/discharge tracking
• Overcurrent protection circuits in industrial equipment

Procurement Notes

Verify the specific suffix 'RSWT' against official documentation to confirm reel packaging and tape-and-reel specifications. Ensure the temperature grade 'I' matches the operational environment requirements. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability before procurement.

Selection Notes

Select this component when high accuracy is required without external calibration due to its zero-drift design. It is suitable for applications where low power consumption is critical, given its microamp-level supply current. Consider the fixed gain of 50 V/V to ensure the output voltage remains within the system's ADC input range during maximum expected current conditions.

Part Context

This device belongs to the INA21x family of current-shunt monitors designed for precision measurement. The series offers multiple gain options and packaging variants to suit different board space and sensitivity needs. The INA213 variant specifically provides a fixed gain, balancing bandwidth and resolution for general-purpose current sensing tasks.

Replacement Considerations

Check for compatible parts within the INA21x family such as INA213B or INA213A if different gain error tolerances are acceptable. Verify pin compatibility and package dimensions when substituting to ensure mechanical fit.