INA214CIRSWT

Overview

The INA214CIRSWT is a single-channel, bi-directional current sense amplifier from Texas Instruments. It features a fixed gain of 100 V/V and operates within a supply voltage range of 2.7 V to 26 V. Key electrical specifications include an input offset voltage of 1 µV, an input bias current of 35 µA, and a gain-bandwidth product of 30 kHz. The device offers a common-mode rejection ratio (CMRR) of 140 dB and a maximum common-mode voltage of 12 V. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in a compact 10-pin UQFN package.

Feature Summary

• Bi-directional measurement capability for both low-side and high-side current sensing applications
• High precision performance characterized by ultra-low input offset voltage and high common-mode rejection ratio
• Wide operating supply voltage range supporting diverse system power architectures

Applications

• Industrial process control systems requiring precise current monitoring
• Battery management systems for charge and discharge tracking
• Overcurrent protection circuits in power distribution units

Procurement Notes

Verify the specific suffix 'RSWT' corresponds to the UQFN-10 package and reel/cut-tape packaging configuration. Confirm that the industrial temperature grade (-40°C to +125°C) meets your environmental requirements. Ensure compatibility with the 100 V/V fixed gain setting for your signal conditioning needs. Check for any recent lifecycle notices or obsolescence warnings directly from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when bi-directional current sensing with high accuracy is required in space-constrained designs. The UQFN-10 package offers a small footprint suitable for dense PCB layouts. Consider the 30 kHz bandwidth for applications not requiring high-frequency transient response. Evaluate the 1 µV offset voltage against your minimum detectable current threshold to ensure sufficient resolution for low-current measurements.

Part Context

This part belongs to the INA214 family of current sense amplifiers designed for high-precision applications. It shares core architectural features with other variants like the INA214AIRSWT but differs in specific package and temperature grading options. The series is engineered to provide stable performance in demanding industrial environments while maintaining low power consumption relative to general-purpose operational amplifiers.

Replacement Considerations

The INA214AIRSWT serves as a verified alternative within the same family, offering similar electrical characteristics in a comparable package configuration. Verify pinout compatibility and thermal performance differences between the standard and air-rated variants before substitution.