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TL972-Q1: input impedance

Dongbao Zhou
Expert 3930 points
Part Number: TL972-Q1

Hi 

What's the input impedance of TL972-Q1? thanks

Dongbao

  • 0
    TI__Guru*** 139906 points

    Hello Dongbao,

    The input characteristic is a current source called IIB in parallel with a couple pF of capacitance. Versus common mode the impedance should be very high. Versus input difference the impedance is low.

    Why is this import to know, what are you trying to accomplish?