Hi,
I am doing a project on the Switched Capacitor Filter.
I read many articles on how to do the simulation.

On doing the PSS analysis, it worked well 2 months back.
I used 100MHz clock speed, dc source as an input and time for stabilization Tsab= 1.5ms and it worked fine.


But on the another circuit with frequency of 1GHz, dc source as input and Tsab =1.5 ms it took long time like for 1% simulation it has taken appro. 2 hour so 100% simulation it will take 200 Hr....which is not possible as there are many circuits to do simulation.

I tried to decrease the Tsab it shows it is failed, as fatal error.


My question is how PSS actually work, it works well for 100MHz frequency but for 1GHz it failed.


Please Help me


cheers

Atul