INA214AIDCKRG4

Overview

The INA214AIDCKRG4 is a bidirectional, zero-drift current-shunt monitor featuring a fixed gain of 100 V/V. It operates on a single supply voltage ranging from 2.7 V to 26 V with a maximum quiescent current of 100 µA. The device supports high-side and low-side measurements with a common-mode voltage range of -300 mV to 26 V. Key electrical specifications include a maximum input offset voltage of 1 µV, an input bias current of 28 µA, and a gain error of 0.02%. It offers a gain-bandwidth product of 30 kHz and a common-mode rejection ratio of 140 dB. The component functions within an operating temperature range of -40°C to +125°C and is housed in a SC-70-6 package.

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 ground.
• Supports high-side and low-side current monitoring independent of the supply voltage level.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loop current measurement
• Overcurrent protection circuits in power distribution units

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the SC-70-6 package dimensions match your PCB footprint requirements. Ensure the fixed 100 V/V gain aligns with your signal conditioning needs without external amplification. Check moisture sensitivity levels if storage conditions exceed specified limits before reflow soldering.

Selection Notes

Select this component when high precision is required for low-voltage drop sensing applications. The zero-drift technology minimizes calibration needs over temperature variations compared to standard amplifiers. Consider the SC-70-6 package size for space-constrained designs. Verify that the 100 V/V gain provides sufficient output swing for your ADC input range given the expected maximum shunt voltage.

Part Context

This part belongs to the INA21x series of voltage-output, bidirectional, zero-drift current-shunt monitors. The series is designed for applications demanding high accuracy in current sensing where low offset and drift are critical. The INA214 variant specifically provides a fixed gain of 100 V/V, distinguishing it from other members of the family that may offer different gain options or bandwidth characteristics.

Replacement Considerations

The INA214AIDCKR is the non-RoHS compliant equivalent. For pin-compatible alternatives within the same series, consider the INA214AIRSWT (UQFN-10 package) or INA214BIDCKT (SC-70-6 package), ensuring gain and package compatibility.