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Recent content by lyrix

  1. lyrix

    Help me with designing PLL charge pump

    Re: PLL_charge_pump design you can control the current mirror, enalbe/disable part of your current mirror by forcing gate voltage to VDD or GND
  2. lyrix

    what is the key reson for scaling gate oxide thickness down?

    Re: what is the key reson for scaling gate oxide thickness d the key reason is to improve the drain current and control the short channel effect.
  3. lyrix

    a basic question about hspice netlist

    in hspice netlist for a mos M0 net1 net2 net3 net4 model L W AS AD PS PD M Parameter AD AS PD PS are the total aera/perimeter of drain/source or AD*M AS*M PD*M PS*M are total value??
  4. lyrix

    how to calculate 10000 successive periods of pll output

    Use Cosmos Scope to see the waveform, it has a function in measurement to measure this
  5. lyrix

    10MHz Pll with 25ps rms jitter

    I feel this spec. is not easy with ring osilator. To achieve this, supply noise and device noise should both be minimized.
  6. lyrix

    Help with VCO Phase noise analysis with SpectreRF

    spectrerf beat frequency First of all, on the SpectreRF Theory, it is refering to the increase of maximum sideband (same as harmonics) which means that an increase of maximum sideband will take care of the noise contributed by the various harmonics. It is important that the number of harmonics...
  7. lyrix

    Need help on analog communication

    u.a bakshi pdf analog communication book For analog circuits of high speed communications, I recommend one book: <Design of Integrated Circuits for Optical Communications> by Razavi :idea:
  8. lyrix

    Go to school at UC Berkeley for free

    download the notes, find the reference books list. that will be the text book.
  9. lyrix

    Go to school at UC Berkeley for free

    a exiting video class! I can download the course now.
  10. lyrix

    Need block diagram of Oscilloscope!p

    Maybe this is the schematic and information you need. :idea:
  11. lyrix

    How do we synthesize analog HDL?

    Re: analog HDL full-custom design cannot be instead of AHDL. AHDL is mainly used for system level modeling and fast simulation. AHDL also have some special advantages. For example, We can build a PLL AHDL model in Phase domain. :wink:
  12. lyrix

    How do we synthesize analog HDL?

    Re: analog HDL AHDL can create and use modules that describe the high-level behavior of components and systems. I only use it for simulation and replace it by a real circuit finally. :)
  13. lyrix

    Spectre vs. HSpice models

    hspice spectre It is better to transfer your hspice model to spectre format before your simulation. Spectre also provide a command to read the hspice format model directly. command line mode: spectre +spp or GUI: click "use spice netlist reader" It occur some errors when I used because spectre...
  14. lyrix

    help:books addressing device physics on EDA

    FUNDAMENTALS OF SOLID STATE ELECTRONICS by Chih-Tang Sah (University of Florida, USA) 8O
  15. lyrix

    "Does transient simulation included noise voltage?&quot

    Re: "Does transient simulation included noise voltage?& Hspice doesn't included, but Spectre's transient simulation does! :o

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