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  3. Implementation of a PFD circuit

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Implementation of a PFD circuit

AM202504226619
AM202504226619 4 months ago

Hey there!! . I found a lot of trouble trying to implement a basic Phase frequency detector circuit in cadence virtuoso using 65nm technology. I have implemented it using a basic D flip flp with a reset input. But the output is not how it is supposed to be                                                                                                                                          

net 10 represents the reset input to both DFF's ,net 25 and net 5 represents the clock inputs
ignore the and and the or gates in the circuit, just consider the clk inputs given to the dff
 

  


This is the DFlip flop circuit, i used a glitch removal unit using a buffer and an and gate because i was getting some glitches for S and R (the inputs to the last stage of  NAND gates)

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