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INA4181: Asking for the recommendation design on INA4180/1

Part Number: INA4181
Other Parts Discussed in Thread: INA4180,

Hi Team,

Customer is looking for qual current sense solution.


Would you please comment what the difference between INA4180 and INA4181?







  • Hello SHH,

    The INAx180 devices are unidirectional - they have no REF pin so OUT is always referenced to GND. They are best suited for measuring a system that is sinking current.

    The INAx181 devices are bidirectional - they have a REF pin which sets the reference of OUT. You can set REF to some non-zero voltage such as VS/2 in order to measure systems that are sinking and sourcing current.

    If this answered your question, please click the green button "This resolved my issue." Thanks!

    Best regards,

    Ian Williams
    Applications Manager
    Current Sensing