INA186A5IDCKR

Overview

The INA186A5IDCKR is a bidirectional current sense amplifier from Texas Instruments, featuring a fixed gain of 500 V/V. It operates with a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. Key electrical specifications include a maximum input offset voltage of 3 µV, an input bias current of 500 pA, and a gain error of 0.04%. The device offers a common-mode rejection ratio of 150 dB and a bandwidth of 27 kHz, with a typical supply current of 90 µA.

Feature Summary

• Bidirectional operation enables accurate measurement of current flow in both directions across the sensing resistor.
• High precision architecture ensures minimal signal distortion through ultra-low input offset voltage and bias current characteristics.
• Wide common-mode voltage range allows compatibility with high-side sensing applications in systems operating up to 40 V.

Applications

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

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-6 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design alignment with the specified 1.7 V to 5.5 V supply voltage limits to maintain guaranteed performance parameters.

Selection Notes

Select this component for applications demanding high accuracy in bidirectional current sensing within compact surface-mount footprints. The fixed 500 V/V gain suits low-voltage drop measurements where high output resolution is critical. Consider the 27 kHz bandwidth limitation for high-frequency switching environments.

Part Context

This device belongs to the INA186 family of zero-drift current sense amplifiers designed for high-precision measurements. The series emphasizes stability over temperature and time, utilizing chopper stabilization techniques to minimize offset drift. It serves as a robust solution for sensitive analog front-end requirements in industrial and automotive contexts.

Replacement Considerations

INA186A1IDCKR: Offers identical functionality but with a different gain setting (50 V/V). Verify that the system gain requirements align with the alternative part's specification before substitution.