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INA301: Current-path on the different ground

na na78
Guru 16770 points
Part Number: INA301
Other Parts Discussed in Thread: INA303

Hi

Is it possible to use INA301 with the current-path like following image?

GND1 is different from GND2.

BestRegards

  • 0
    TI__Mastermind 26730 points

    Hello na na78,

    Thanks for aksing about this. This will very likely cause a ground loop. One work around could be using the INA303 since it has a reference pin. Then you could connect INA303 GND pin to GND1 and connect INA303 REF pin to GND2. Of course for this connection the difference between GND1 and GND2 can't be equal or greater than the INA301 power supply voltage.

    Sincerely,
    Peter Iliya
    Current Sensing Applications