PFD+Charge Pump Noise Simulation Issue in PSS

Status
Not open for further replies.

potibulibali

Newbie level 3
Joined
Jul 20, 2007
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,301
I am having some difficulty simulating the PFD/CP noise. I have the output noise of the charge pump in PSS (after setting the phase difference b/w ref and feedback to 0). The transfer function from here to PLL output should be N/Kphi. But, I am getting unrealistic results if I do this. Any ideas on what I am doing wrong?
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…