INA214BIRSWR

Overview

The INA214BIRSWR is a single-channel, bi-directional current shunt monitor from the Texas Instruments INA21x series. It features a zero-drift architecture with a fixed gain of 100 V/V and a 30 kHz gain-bandwidth product. The device supports high-side or low-side measurements with a common-mode voltage range of -0.3V to 26V. It operates on a single supply voltage between 2.7V and 26V, consuming a maximum of 100µA. Key electrical parameters include a maximum input offset voltage of 1µV, a CMRR of 140dB, and an input bias current of 28µA. It functions within a temperature range of -40°C to +125°C and is housed in a UQFN-10 package.

Feature Summary

• Bi-directional measurement capability for both sourcing and sinking currents
• Zero-drift architecture ensures low offset voltage for high accuracy
• Supports high-side and low-side current sensing configurations
• Wide common-mode voltage range independent of supply voltage

Applications

• Battery management systems
• Overcurrent protection circuits
• Load switch control
• Power monitoring in industrial equipment

Procurement Notes

Verify the specific suffix 'B' indicates the specified gain and accuracy grade against the official datasheet. Confirm the 'RSWR' suffix corresponds to the correct UQFN-10 tape and reel packaging configuration. Ensure the component meets the required operating temperature range for your specific application environment before finalizing procurement.

Selection Notes

Select this component when high precision is required for bidirectional current monitoring in space-constrained designs. The UQFN-10 package offers a compact footprint suitable for dense PCB layouts. Consider the 100 V/V fixed gain for applications requiring direct voltage output proportional to small shunt voltages without external resistor networks.

Part Context

This part belongs to the INA21x family of voltage-output, bi-directional, zero-drift current shunt monitors. These devices are designed to sense voltage drops across shunt resistors with high accuracy. The family shares similar architectural features but varies in gain, bandwidth, and package options to suit different performance and size requirements.

Replacement Considerations

Check for compatible alternatives within the INA21x series such as INA210 or INA213 if pinout compatibility is not strictly required. Verify that any substitute maintains the same gain, package type, and electrical specifications.