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INA139

Gerhard Kreuzer
Expert 2580 points
Other Parts Discussed in Thread: INA139, INA210

Hi,

can I use the INA139 as low side Monitor? Will tie In- to Gnd and In+ to my shunt. I will use an independant supply for the INA139 (15V.

Thanks a lot for helping.

With best regards

Gerhard

  • 0
    TI__Intellectual 1385 points

    Hello Gerhard,

    Unfortunately, you can not use the INA139 below a common voltage of 2.7V.  In a low side configuration this will not work properly.  I would suggest an INA210 for the low-side measurement.  There are a few gain versions of this device one should fit you application.

    Regards,

    Jamieson Wardall

    Sensing Applications