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PGA204 PIN Connection

Li kevin
Prodigy 20 points

Hello ，

How should I connect the PIN1/PIN6/PIN7/PIN9 , if I don't need adjust the offset volatge of amplifier ?

From the following diagram , if we need to leave  it floating?


It seems the part is very old and its datasheet is not as well as the style TI used now .

Thanks.

  • 0
    TI__Mastermind 27715 points
    Hello Kevin,

    Yes, you can leave those pins floating if you don't need to adjust the input stage offset.

    Pin 6 and Pin 7 are the optional input offset trim pins. Pin 1 and Pin 9 are actually sense points for the output voltage of the input stage amplifiers: VO1 is the output of input amplifier A1, and VO2 is the output of input amplifier A2.

    Best regards,

    Ian Williams
    Linear Applications Engineer
    Precision Analog - Op Amps
  • 0 in reply to Ian Williams
    Prodigy 20 points

    Hello  Williams，


    Got you , thanks so much .


    Your response is very fast ,exellent！

    Regards

    Kevin