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Simulators >> RF Simulators >> How to simulate the deadzone of PFD/CP with spectre
https://designers-guide.org/forum/YaBB.pl?num=1289394994

Message started by incol on Nov 10^th, 2010, 5:16am

Title: How to simulate the deadzone of PFD/CP with spectre
Post by incol on Nov 10^th, 2010, 5:16am

Hi

I want to simulate the deadzone of PFD/CP with spectre, can I sweep the difference phase of the two clock input, and plot the average current of the CP?

Thanks!

Title: Re: How to simulate the deadzone of PFD/CP with spectre
Post by raja.cedt on Nov 11^th, 2010, 3:42am

correct but while ding that please terminate charge pump with a proper voltage source.

Thanks.

Title: Re: How to simulate the deadzone of PFD/CP with spectre
Post by incol on Nov 15^th, 2010, 11:32pm

raja.cedt wrote on Nov 11^th, 2010, 3:42am:

correct but while ding that please terminate charge pump with a proper voltage source.

Thanks.

Thank you very much. And Do you know how to sweep the phase with spectre, use PSS?

Title: Re: How to simulate the deadzone of PFD/CP with spectre
Post by raja.cedt on Nov 15^th, 2010, 11:42pm

hi,
define some variable td for fbclk. Go to tools in ADE from there parametric analysis. Is this what you are asking or any thing else?

Thanks.