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Recent content by chlee

  1. C

    Transconductance and parasitic capacitance for NMOS

    Is there anybody can help me with this? I am quite confused of the terms given by Cadence, I need both value for my calculation. Please help me...
  2. C

    Transconductance and parasitic capacitance for NMOS

    I am using Cadence Spectre to obtain model parameter and DC operating point for NMOS. I am still a beginner in handling this software and I am confused of parameters that are showned. For transconductance, is it enough to just using the parameter "gm"? There are gmbs and gmoverid which I am...
  3. C

    NMOS as output buffer and its buffer capacitance

    Then what exactly is the relationship between the buffer capacitance and those 3 capacitances?
  4. C

    NMOS as output buffer and its buffer capacitance

    I am using NMOS as output buffer for my amplifier design. Is the load resistor parallel with the NMOS buffer capacitance in small signal model? What parameters involved in calculating the buffer capacitance?(Not include parameters which usually ignored) Sorry for bad english. Urgent help plz...
  5. C

    Plot graph in Virtuoso Schematic Editor...

    Sigh~~ Actually I have done that many times before... It still shows empty graph...
  6. C

    Plot graph in Virtuoso Schematic Editor...

    When I click plot output in analog environment, it only shows empty graph. I have checked the output box, both 'plot' and 'save' column show 'yes', plotting mode is 'replace'. Please help me solve this problem...
  7. C

    Plot graph in Virtuoso Schematic Editor...

    I am currently doing an assignment using Virtuoso Schematic Editor using Spectre analysis and analog.lib - perform dc sweep analysis for a current mirror. I can't plot the graph for the current flowing through the transistors. Whenever I click Results > Direct Plot > Main Form in analog...

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