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How to do PFD simulation ?

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gavin168

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how to simulate PFD, it is necessary to simulate with charge pump circuit?

thanks
 

finalvolition

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simulation about PFD

yes, it usually simulated with charge pump circuit combined. such as reset delay
 

northeast1

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Re: simulation about PFD

gavin168 said:
how to simulate PFD, it is necessary to simulate with charge pump circuit?

thanks

give two clock with same frequency but different phase, and you can see the voltage of cap will increase.
 

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