INA214CIDCKR

Overview

The INA214CIDCKR is a voltage-output, high or low side measurement, bi-directional 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 consumes a maximum of 100 µA of supply current. The device features a fixed gain of 100 V/V, a gain bandwidth product of 30 kHz, and an input bias current of 28 µA. It supports a common-mode voltage range of -0.3 V to 26 V and offers a common-mode rejection ratio of 140 dB. The input offset voltage is typically 1 µV with a gain error of 0.02%. Operating temperatures span from -40°C to +125°C, housed in a SC-70-6 package.

Feature Summary

• Zero-drift architecture ensures low offset voltage for accurate sensing across small shunt voltage drops
• Bi-directional capability allows detection of current flow in both directions relative to ground
• Supports high-side and low-side measurements independent of the supply voltage level

Applications

• Battery management systems requiring precise current monitoring
• Overcurrent protection circuits in industrial equipment
• Power management units in portable devices

Procurement Notes

Verify the specific suffix 'C' indicates commercial temperature grade (-40°C to +85°C) versus 'I' for industrial grade (-40°C to +125°C) as per official datasheets. Confirm package marking and reel specifications match project requirements. Ensure ESD handling protocols are followed during assembly due to moisture sensitivity classification.

Selection Notes

Select this component when high accuracy is required with minimal external calibration due to zero-drift technology. Suitable for applications where power consumption must be minimized while maintaining wide common-mode voltage coverage. Compare against INA210/INA211/INA212/INA213 variants if different gain bandwidth products or offset voltages are needed.

Part Context

Part of the Texas Instruments INA21x family of bidirectional zero-drift current shunt monitors. This series provides five fixed gain options to accommodate various shunt resistor values and voltage ranges. The family shares similar pinouts and functional characteristics, differing primarily in bandwidth, offset voltage, and gain specifications.

Replacement Considerations

INA214IDCKR (Industrial temperature grade). INA214BIDCKT (Alternative tape & reel packaging). Verify thermal performance and gain accuracy requirements before substituting.