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Op Amp circuit

Discussion in 'General Electronics Discussion' started by balram, Sep 17, 2015.

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  1. balram

    balram

    1
    0
    Sep 17, 2015
    thanks for d reply :D yh i want to design a circuit and yes i have seen many circuits like 3280,3080 & many other OTA ic's but its my project to design OTA which meets the specifiations(BW,GAIN,SLEW RATEand other ..) of market OTA ic's :/ with d ckt shown below am getting
    BW(bandwidth)=1.419kHz
    gain=63.9dB
    vo=5.9V ...... i took IC 3280 as reference to compare
    with d same inputs given to ic 3280 i got
    BW(bandwidth)=89.37Hz
    gain=39dB
    vo=996V.........................Vin=10pk-pk & f=100kHz


    yh i have designed one in multisim here is d ckt and its o/p & freqncy responses ..help me to get d values aproximately to ic values plzz Untitled.jpg op.jpg op1.jpg
     

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    Last edited: Sep 17, 2015
  2. Old Steve

    Old Steve

    734
    169
    Jul 23, 2015
    @balram , I chose not to reply again in the other thread. It's a hijacking.
    So I guess you're effectively designing an operational transconductance amplifier chip for simulation.

    Designing one to compare with a commercial one is beyond my ability, but perhaps reading some of the results from this search will help:-
    https://www.google.com/search?q=ca3...operational+transconductance+amplifier+design

    This might possibly bring you closer:-
    http://www.johnross.com/ota.jpg

    Is this a project set by a training course?
     
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