About track & Hole example by Ken Kundert

[dongzz201]

I have read this document : https://www.designers-guide.org/Analysis/sc-filters.pdf
I want to re-simulate the example named Track & hold .
This problem confuse me :
If the previous MOS model ( Level-3 model ) is used, the PAC & PXF result is similiar whith that in the paper. but if the my BSIM3V3 models is used, the result is absolutely different or wrong, the voltage gain is almost zero except DC frequency.
I use MMSIM6.1 version and IC5141 Base.
Anything is wrong ?
I use +-2.5V VDD & VSS voltage. My technology can accept 6V voltage.
Need helps!!

 

[oermens]

you might want to ask him on his forum...

http://www.designers-guide.org/Forum/

 

[dongzz201]

i have found the reason:
The error is cause by my MMSIM61.

If i use ic5141 usr6 spectre rf simulator, the simulation result is right.
but if i use mmsim61-base spectre rf simulator, the result is wrong. but the PSS can convergence successfully.
should i re-install my mmsim61 again ?