Split Collector Op Amp Gain

Discussion in 'General Electronics Chat' started by wchalmer, Mar 9, 2009.

  1. wchalmer

    Thread Starter New Member

    Mar 9, 2009
    I have just completed designing a transconductance reduction op amp with a split collector differential input stage. I am having a problem with getting enough gain out of the amplifer.

    I am only getting 91dB. I need to get 100db or higher. Could this be a dc biasing problem preventing me from getting the dc open loop gain. My unity gain frequency is coming in around 1MHz.

    Thanks for your inputs.