simulator for switched capacitor filter

[prabhu_psg]

Hi

I have do an academic project in switched capacitor filters.I have some doubts in it

1.Spice 3f5 is very slow and most of other universities use spectre .Is there any other free tool available for the simulation
2.Can we use cider(berkeley mixed mode simulator or gnucap (geda project mixed mode simulator)
3.What will the best type of opamp to be used (Miller compensated or folded cascode).
4.If folded cascode can any body help me with the theory of folded cascode with CMFB circuits

Please do help me though it is very preliminary

Thanks & Regards

Prabhu.G

 

[sunking]

1.spectre or swichcap can fit you.

 

[prabhu_psg]

Hi

I am is search of free tool .It seems switcap distribution is stopped
prabhu

 

[noiseless]

should be spectreRF