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OPA1632: OPA1632

Shlomi Yehezkia
Mastermind 6150 points
Part Number: OPA1632

Hi Team,

I have a problem on the small boards (AFE) of the new dEdge that based OPA1632.

I got in the first input pin 1v and the second input pin 4v even I don't supply voltage, I run it in the TINA and not see this behaviour.

I will be happy to get your advice.

Can you go over the schematics and see if you see anything wrong.

Thanks,

Shlomi

SmallCard_schematics.pdf

BigCard_schematics.pdf

  • 0
    TI__Genius 15555 points

    Hello Shlomi,

    I don't see anything in the schematic that would suggest the behavior you are seeing. To confirm you are measuring these voltages at the inverting & non-inverting inputs of the OPA1632?

    You mention you see this behavior without a supply voltage, are you still providing voltage to the inputs/vocm pins without the supply? What are the input and vocm signals you are providing?

    Best,

    Hasan Babiker