Op amps: Bias Currents

Discussion in 'Homework Help' started by Steve1992, Jul 30, 2011.

  1. Steve1992

    Thread Starter Senior Member

    Apr 7, 2006
    100
    0
    With reference to the AAC book on Op-amps Practical Considerations.

    Compensating resistor
    By using a compensating resistor wouldnt I then have to sacrifice the benefit of the high impedance of the op-amp?

    Steve
     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    If you worry about the input bias current of a 42 years old 741 opamp and want a high input impedance then select a modern opamp that has Jfet or Mosfet inputs with NO input bias current.
     
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