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Recent content by shirley070314

  1. S

    charge pump switch size choose problems

    thank you so much. I will have a try - - - Updated - - - thank you . the link you sent me is really useful. I will have a try.
  2. S

    charge pump switch size choose problems

    thank you for replying me. you point is right. but my problem is how to choose the switch size not the current source size. i know that my switch's Length can be 180nm, but how to determine Width of MOS? only the current 40uA is not enough to determine the size.
  3. S

    Charge-Pump for PLL/DLL switch sizes

    if Icp=40uA, the process is 0.18um, how should we choose the switches(PMOS/NMOS in the middle)?
  4. S

    charge pump switch size choose problems

    Hi, guys, I am designing a charge pump based PLL. and I have come across some problems that would like you to help me. my problem is how to choose the size for switch in charge pump. I am using the tradtional charge pump circuits which includes UP and Down current source, PMOS and NMOS switch...
  5. S

    switch mode charge pump

    have you solved this problem about charge pump size choosing? I come across the same problems with you. thank you for replying for me
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