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Recent content by umount

  1. U

    Skill-mode for emacs21 - need help, download link

    skill-mode for emacs21 Hi everyone, Does anybody has skill-mode for emacs21? I really need it. I search it, but only can find the version for emacs19. seems somebody has uploaded it to the cadence ftp, where i can't login. If you have it, could you please send me a copy: umount@ msn.com I...
  2. U

    ic5141 error-icfb.exe: error while loading shared libraries

    Re: ic5141 error first you ensure whether you have the required library. if so, you can add the path to the environment variable LD_LIBRARY_PATH hope this helps
  3. U

    Latex Editor in Linux

    linux latex editor first, you need to learn it. then you can use latex to produce your paper in pdf format
  4. U

    [help] cadence IC5033 on all platforms

    Guys, I need your help urgently. I wanted to install IC5033. First I tried RHEL4U6, as most people said it can support Ic5033 well. I followed very step and installed sucessfully. But it can't startup, or say, it was too slow to startup(almost half an hour). Some people said it maybe caused by...
  5. U

    help about fully differential gain boosting opa

    i wanna design a fully differential gain boosting opa, and also my additional stage is fully differential. i wonder is it necessary for my additional stage to have CMFB circuits and why they need or needn't? Thanks for your kindness
  6. U

    how to simulate common mode input range of telescopic OTA

    how to simulate common mode voltage i searched a lot. And many people said "configure your op-amp as unity gain buffer. Now, sweep your DC input, and plot output vs input.The linear region in your output with gradient 1 is your ICMR." I think this is right. but as we know, telescopic OTA has a...
  7. U

    Where can download TSMC0.18 pdk?

    free tsmc pdk i used tsmc 0.18 mixed signal pdk it is useful, convienent for designers
  8. U

    High Speed Digital Design/USB

    and the spec is difficult to understand. you have to relate your circuit behavior with the spec
  9. U

    Problem with a gain boosting opa design as it oscillates

    Re: gain boosting opa can anybody help me?
  10. U

    Problem with a gain boosting opa design as it oscillates

    Re: gain boosting opa hi hylas, thanks for your kindness. here is the ocillate waveform. please have a look.
  11. U

    Problem with a gain boosting opa design as it oscillates

    Re: gain boosting opa Thanks for you reply. i can describe it in details. the main amplifier is a folded cascode. the additional opamp is fully differential folded cascode. i did ac simulation, and get a GWB of about 300M. the second pole located at 1G. PM is about 80. the GWB of additional...
  12. U

    Problem with a gain boosting opa design as it oscillates

    hi everyone, i am doing a gain boosting opa recently. the GBW of the additional opa meets the requirement of BULT's paper. but the opa still ocillates. i've no idea how this happen, and how to modify. can any body help me? thanks
  13. U

    help on pll jitter simulation

    but if no thermal noise or flicker noise, where's jitter from?
  14. U

    help on pll jitter simulation

    does anybody use hsim to simulate jitter of pll? with hsim, i can get peak to peak jitter and RMS jitter using .measure. some said i can't get jitter with just transient simulation. so i wonder where does this jitter come from? is it from flicker noise of the mosfets? does these peak to peak...
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