Op Amp enable/disable

Discussion in 'General Electronics Chat' started by Cuetek, Feb 4, 2011.

  1. Cuetek

    Thread Starter New Member

    Jul 31, 2010
    3
    0
    [​IMG]Hey Guys (and Grrlz),

    I need to turn one of these two op amps on and off as simply as possible with a digital signal (VCCDIG-0V). Maybe a high side FET or something? Anybody got any good ideas?

    [​IMG](see response below for schematic)

    Thanks, -Mikey
     
    Last edited: Feb 4, 2011
  2. bertus

    Administrator

    Apr 5, 2008
    15,652
    2,348
    Hello,

    Do you have a schematic?
    You can upload it here on the forum:


    Bertus
     
  3. Cuetek

    Thread Starter New Member

    Jul 31, 2010
    3
    0
    Here it is (I hope).
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,652
    2,348
    Hello,

    What is the purpose of switching the opamp on and off?
    You could change the gain setting with an analog switch (like a 4066 or DG502) if you want too.

    Bertus
     
  5. StayatHomeElectronics

    Well-Known Member

    Sep 25, 2008
    864
    40
    Can you use an analog switch to disconnect the output of one amplifier from the rest of the circuit?
     
  6. Cuetek

    Thread Starter New Member

    Jul 31, 2010
    3
    0
    Analog switch to change the gain would be spot on. I'll go check it out. Thanks
     
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