A exotic opamp

Discussion in 'Homework Help' started by FBorges22, Mar 23, 2009.

  1. FBorges22

    Thread Starter Active Member

    Sep 11, 2008
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    0
    Greetings,

    I am looking for a operational amplifier that supports a voltage of 25V and -25V in the Vs(+) and the Vs(-) terminals respectively. Is there any commercial component available that supports these voltages?

    Thanks,
    FBorges22
     
  2. Audioguru

    New Member

    Dec 20, 2007
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    896
    An OPA445 from Texas Instruments has a max allowed supply voltage of plus and minus 45V.
    It is made a few times a year in quantities of a couple of thousand that sell out in about one week.
    Today, Digikey has 2082 of them in stock in an 8-pins DIP for $9.50US each.
     
  3. FBorges22

    Thread Starter Active Member

    Sep 11, 2008
    104
    0
    I also need to use this opamp to make a high voltage Wien Bridge oscilattor. Do you think that I can make one with this opamp?
     
  4. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    The OPA445 opamp has an output of 78V p-p up to 70khz at low distortion.
    It will be fine as a high voltage Wien Bridge oscillator.
     
  5. FBorges22

    Thread Starter Active Member

    Sep 11, 2008
    104
    0
    Interesting...

    Thanks for the tip
     
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