AC Simulation for SC Circuits in spice

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sumit_techkgp

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hspice ac simulation

Hello All,
We use pac to analyze the ac response of switch cap circuits in spectre. Is there any
way to analyze ac-response of switch caps in spice ?
Best Regards,
Sumit
 

sumit_techkgp said:
Hello All,
We use pac to analyze the ac response of switch cap circuits in spectre. Is there any
way to analyze ac-response of switch caps in spice ?
Best Regards,
Sumit
Click to expand...

Yes, it´s possible with SPICE.
For this purpose you have to replace each S/C unit with a time continuous analogon.
There are specific tables how the different switch arrangements are replaced.
The analog replacements can be modelled with delay lines or controlled sources.
The procedure is described, for example, in
Ghausi/Laker: Modern Filter Design - Active RC and Switched Capacitor.
 
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