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Recent content by watch_back

  1. W

    ADE GXL Optimisation and Sensitivity Analysis

    Thank you for your response. You are right. Its absolutely relative and there is trade offs. Till now, i have a spec and my opamp is reaching fast setting, high slew rate, good power consumption but my gain is not reaching (target min 80db, but i m getting 72db). I want to optimize it for speed...
  2. W

    ADE GXL Optimisation and Sensitivity Analysis

    Hi, I am beginner in ADE GXL. I want to Optimize my circuit and do a sensitivity analysis. Could somebody plz plz plz give me a tutorial that I can follow and improve my circuit?
  3. W

    Help plz: Class AB OTA design in 28nm

    Hi Dominik, Thank you for your support. I actually had a problem with the aspect ratio of the transistors as I am completely new on this field. But now I got a feeling about the aspect ratio and reached almost 70db gain with a well output. Next problems I am facing are as following - 1. The...
  4. W

    Help plz: Class AB OTA design in 28nm

    I have written a lot of things ... i dont knw somehow they dissappeared. Anyway, so far I have achieved 77db of gain. I need more 4-5db but it is not easy. i kept trying but a single change make my gain drop to 50-60db. having 77db of gain with 100mv of voltage swing is also an issue. how can i...
  5. W

    Help plz: Class AB OTA design in 28nm

    Can u ply refer me any tutorial or any resource where i can study and get more information about this? Regards
  6. W

    Help plz: Class AB OTA design in 28nm

    Hi Dominik, Thank you for the comment. I have studied current mirrors. So far I am playing with the W/L of transistors. One good point you said is the high swing of cascode. Could you give me some hints about it or any tutorial might be helpful as well. ..............did u mean that instead of...
  7. W

    Help plz: Class AB OTA design in 28nm

    Hi I have a specification as high gain (80db), fast settling few ns, good PM. I have gone through several topolgoies. One of them I am considering now is from Huijsing's book having a folded mesh with a minimum selector. If I use Regular PMOS NMOS devices I can't manage to keep all of the...
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