INA213AIDCKR

Overview

The INA213AIDCKR is a single-channel, bidirectional current-shunt monitor from Texas Instruments' Zero-Drift series. It features a fixed gain of 50 V/V and operates within a supply voltage range of 2.7 V to 26 V. The device draws a typical supply current of 65 µA and supports an input common-mode voltage up to 26 V. It offers high accuracy with a maximum offset voltage of 5 µV and a minimum common-mode rejection ratio (CMRR) of 140 dB. The component functions across an extended temperature range of -40°C to +125°C and is housed in a compact SC-70-6 surface-mount package.

Feature Summary

• Zero-drift architecture ensures minimal offset voltage drift over temperature and time
• Bidirectional measurement capability allows detection of both positive and negative currents
• High common-mode rejection ratio maintains accuracy under varying common-mode conditions
• Low power consumption enables efficient operation in battery-powered systems

Applications

• Battery management systems for portable electronics
• Overcurrent protection circuits in industrial equipment
• Current monitoring in motor control applications
• Power supply output current sensing

Procurement Notes

Verify the specific suffix 'CKR' corresponds to the SC-70-6 tape-and-reel packaging configuration as defined by Texas Instruments. Confirm that the 'A' grade designation meets the required offset voltage specifications for your application. Ensure compatibility with the target PCB footprint for the six-lead SC-70 package. Cross-reference the latest datasheet revision to confirm pinout and electrical characteristics remain unchanged.

Selection Notes

Select this component when high precision is required without external calibration due to its zero-drift technology. It is suitable for applications requiring bidirectional current sensing with a fixed gain of 50 V/V. Consider the 26 V common-mode voltage limit and 2.7 V minimum supply voltage when designing the power rail. The low 65 µA quiescent current makes it ideal for energy-constrained designs compared to higher-current alternatives.

Part Context

This part belongs to the INA21x family of voltage-output, bidirectional, zero-drift current-shunt monitors. The family includes variants like INA212, INA214, and INA215, which differ primarily in gain settings and bandwidth. The INA213 specifically provides a fixed 50 V/V gain, balancing resolution and dynamic range for general-purpose current sensing tasks in compact form factors.

Replacement Considerations

Direct functional substitutes within the same package include INA212AIDCKR (Gain 100 V/V) and INA214AIDCKR (Gain 25 V/V). Verify that the gain difference does not saturate the output or reduce resolution in your specific circuit design. Other family members may require schematic adjustments due to varying gain configurations.