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Recent content by jeepx5

  1. J

    how can i improve my PLL?

    Increase the open loop gain to decrease the locked phase error
  2. J

    LVDS transmitter problem

    It might be caused by the loads, especially the capacitance loads.
  3. J

    How to avoid Bipolar OPAMP oscillation ?

    OPAMP Oscillation According to the second bode, the rise of the magnitude must be caused by a zero instead of a input pole. Added after 2 minutes: And it's amazing that in the bipolar world the GBW can be increased without any other cost just by introducing a resistor.
  4. J

    How to avoid Bipolar OPAMP oscillation ?

    OPAMP Oscillation I'm not a bipolar guy, but I am quite confused why the feedback cap can remove or push the zero and pole pair to higher frequency? And by introducing this cross coupled cap will the corner freq be lower in the second bode? if it does decrease the dominant pole, then the...
  5. J

    What is the baud rate at which PC communicates (serial communication) ?

    serial communication rania is right
  6. J

    Low Voltage Rail to Rail op,who could give me some advice ?

    a book named low voltage opamp will be helpful
  7. J

    Sub-threshold saturation--is that ok?

    It depends on your application
  8. J

    Need help in understanding

    razavi's book is good for you to set up the intuition of the circuit.
  9. J

    What is the purpose of using 2nd order loop filter for DLL?

    question about DLL Cuz the 2nd order DLL might be unstable. And the loop filter is used to minimize the ripple of the control voltage to reduce the jitter
  10. J

    Information about serializer design

    Serializer I think razavi's book will be helpful
  11. J

    why capacitive loads are drived by OTA?

    opamp is ota+driver
  12. J

    basic engineering circuit analysis

    I want it too
  13. J

    how to simulate sc cmfb with PSS and PAC

    By running PSS and PAC, you can get the frequency response. I don't think there could be any problems.
  14. J

    why my amplifier is oscillating?

    Yes, the s-parameter will help you to figure out whether the circuit is stable by checking the stablized factor.
  15. J

    problem about PLL simulation

    try to run the transient simulation first
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