Ad711

Discussion in 'General Electronics Chat' started by Vespasian, Jun 27, 2008.

  1. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    Hi i have a ad711 inverter but my output is staying at a plus voltage, when i need a minus voltage, basically my inverter aint inverting.

    As described it is an AD711, the inverting input is coming from an DAC56U

    any theories would great ty

    V:confused:
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    Schematic?
     
  3. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    basically my inverting input (pin2) is connected to my output (pin6) through a 33pF cap. sorry no schematics as its a company schematic and its a no no

    sorry for the lack of info

    v:mad:
     
  4. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    Aha, so it's a case of asking people to guess the circuit and then guess what might be wrong.

    Good luck with that.
     
  5. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    just looking any ideas on why an AD711 op amp would not invert, any usual symptoms
     
  6. bertus

    Administrator

    Apr 5, 2008
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    Last edited: Jun 27, 2008
  7. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    Thankyou thats great

    again sorry for the lack of info

    V
     
  8. bertus

    Administrator

    Apr 5, 2008
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    Hello,
    Did you see the edit.
    Greetings,
    Bertus
     
  9. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    yes thankyou
     
  10. thingmaker3

    Retired Moderator

    May 16, 2005
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    The capacitor in the feedback path made it an integrator instead of an inverter.
     
  11. Vespasian

    Thread Starter Member

    Jun 26, 2008
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    how does the cap make it into an integrator?
     
  12. bertus

    Administrator

    Apr 5, 2008
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