INA186A4IDCKR

Overview

The INA186A4IDCKR is a high-precision, bidirectional current sense amplifier from Texas Instruments. It features a fixed gain of 200 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. The device supports common-mode voltages from -200 mV to 40 V. Key electrical specifications include a maximum input offset voltage of 3 µV, a gain error of 0.04%, and a quiescent current of 90 µA. It offers a common-mode rejection ratio of 150 dB and a bandwidth of 33 kHz. The component is housed in a SC-70-6 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional operation enables accurate measurement of current flow in both directions across the sensing resistor.
• High precision architecture minimizes errors through ultra-low input offset voltage and minimal gain deviation.
• Wide common-mode voltage range allows compatibility with various system bus voltages up to 40 V.

Applications

• Battery management systems requiring precise bidirectional current monitoring
• Industrial process control loops for load cell and sensor signal conditioning
• Overcurrent protection circuits in power distribution units

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-6 package variant. Confirm that the A4 designation matches the required 200 V/V gain for your circuit design. Ensure the operating environment stays within the specified -40°C to +125°C thermal limits. Check RoHS compliance status if restricted substances are mandated by your project requirements.

Selection Notes

Select this component when bidirectional sensing is necessary alongside high accuracy. The low quiescent current makes it suitable for battery-powered applications. The wide common-mode range simplifies high-side or low-side placement. Consider the small SC-70-6 footprint for space-constrained PCB layouts compared to larger packages.

Part Context

This part belongs to the INA186 family of zero-drift current sense amplifiers. The series is designed for applications demanding high DC accuracy without external trimming. The INA186A4IDCKR specifically provides a fixed gain of 200 V/V, distinguishing it from other gain variants in the same product line.

Replacement Considerations

Public confirmed substitute part numbers: None identified in available documentation.