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Recent content by wwwzhenghao

  1. W

    A simple question about LDO

    in fact,LDO request:low drop voltage ,high efficient,and output cuurent,loop stability.input is 5v,but output is 1v,impossible.
  2. W

    PLL ic for FM detection

    could you say more details
  3. W

    What is the gain of a NMOS diff amp with PMOS loads?

    Re: Gain of Diff Amp i can not see your schmatic,why?maybe you can read allen's book about op.
  4. W

    Looking for a 12V to 20V DC-DC Converter

    conversor 12vdc/20vdc i don't understand what you really ask.
  5. W

    what is the best book for ADC and DAC

    i think J. baker's book is good. Added after 1 minutes: name:coms mix-signal design.
  6. W

    How to improve the psrr of a bandgap circuit?

    i agree:cascode architecture is best.
  7. W

    cmos 3mA current mirror by using pmos-transistors

    you can shut many mos transisters.only one is bad design
  8. W

    how to simulation the sigma-delta modulator in simulink

    hi all: i design a 2-1 cascode sigma-delta modulaor ,and simulate in simulink,could you gave me some advice.
  9. W

    New to Sigma - Delta topics

    who can shre the book:''The Design of Low Voltage ,Low Power Sigma-Delta Modulator''.thanks,thanks a lot.
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