INA213BIRSWT

Overview

The INA213BIRSWT is a bidirectional, zero-drift current-shunt monitor manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2.7 V to 26 V and features a fixed gain of 50 V/V. The device supports high-side or low-side measurements with a common-mode voltage range extending from -0.3 V to 26 V. Key electrical specifications include an input offset voltage of 5 µV, a gain error of 0.5%, and a bandwidth of 7 kHz. It consumes a maximum operating supply current of 100 µA and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture ensures low offset voltage for accurate sensing of small shunt voltages down to 10 mV full scale.
• Bidirectional capability allows detection of both positive and negative currents relative to the ground reference.
• Wide common-mode voltage range enables operation in high-side and low-side configurations without external level shifting.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops with isolated measurement needs
• Overcurrent protection circuits in power distribution units

Procurement Notes

Verify the specific suffix 'IRSWT' against the official datasheet to confirm package type and tape-and-reel specifications. Confirm that the 'B' variant meets the required gain error tolerance of 0.5% for your application. Check for end-of-life status or obsolescence notices directly from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when high precision is required over wide temperature ranges due to its zero-drift characteristics. Ensure the system's common-mode voltage does not exceed 26 V. Compare the 50 V/V gain against available alternatives like the INA210 or INA214 if different signal scaling is necessary for downstream analog-to-digital conversion.

Part Context

This part belongs to the INA21x family of voltage-output, bi-directional, zero-drift series current-shunt monitors. These devices are designed to sense voltage drops across shunt resistors while rejecting high common-mode voltages. The family offers various fixed gains and packages to suit different industrial and automotive applications.

Replacement Considerations

Direct substitutes within the same family include INA213AIRSWT (higher precision) or INA213CIRSWT (standard precision). For different gain requirements, consider INA210AIRSWT (200 V/V) or INA214AIRSWT (100 V/V), ensuring pin compatibility and thermal performance match.