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Recent content by sisc1525

  1. S

    About Bandgap for High Frequency

    yes,kickback will influence it.so u can tradeoff between speed and accurate.
  2. S

    How to simulate oscillator in SPICE??

    u can set an initial condition for cap.
  3. S

    How to choose the opamp

    cascode structure maybe I can try
  4. S

    Do I need a PTAT or constant current source for charge pump?

    you can get it from razavi's book.
  5. S

    heating of 5V regulator

    you can use a buck regulator
  6. S

    Issues about pll wave view

    you can use the calculator.
  7. S

    How to increase the speed of comparator

    you can get a new type for reducing the cap
  8. S

    How to reduce the noise in BJT and FET?

    reduce the noise mr. wang's answer is very useful for us.
  9. S

    How to test a bandgap circuit?

    I think you should test the temp. coefficient, line regulate,load regulate &psrr
  10. S

    Need some help on IC5.033

    something was wrong when you shutdown the pc last time.
  11. S

    Problem with noise in a highspeed pipeline ADC!

    about pipeline ADC! some books introduce the parameter.razavi's book.
  12. S

    Links to free layout tools

    free layout tool Ledit is a good layout tool.
  13. S

    Analog IC Interview Questions

    I think my basic concept is not good at all!
  14. S

    Problems with getting FFT results of post simulation on ADC

    Post simulation on ADC our ADC is also do the post simulate,but I don't know how to do it?
  15. S

    Need advice on using Gate Oxide Capacitor

    Gate Oxide Capacitor I think you can use two poly layers cap.or a poly-metal cap.their operation range is wider.
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