The Designer's Guide Community
Forum
ForumVerilog-AMSAnalysisModelingDesignTheory
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines.
Apr 27th, 2024, 12:33am
 
  HomeHelpSearchLoginRegisterPM to admin    
The Designer's Guide Community Forum › Simulators › RF Simulators › Pnoise sims. for CDS SC integrator
‹ Previous topic | Next topic ›
Pages: 1
Send Topic Print
Pnoise sims. for CDS SC integrator (Read 2478 times)
mvaibhav
Junior Member
**
Offline



Posts: 10
Pnoise sims. for CDS SC integrator
Mar 12th, 2010, 2:37am  
Hi,

I'm trying to simulate a SC integrator with correlated double sampling technique using Cadence SpectreRF. I used pss-pnoise simulations but I don't see any noise shaping from 0-fs/2 in the autozeroing phase as I would expect due to the PSD shaping function of CDS -- 2(1-cos2pifT). I tried both "sources" and "tdomain" pnoise.


Thanks.
Back to top
 
« Last Edit: Mar 12th, 2010, 9:47am by mvaibhav »  
View Profile   IP Logged
mvaibhav
Junior Member
**
Offline



Posts: 10
Re: Pnoise sims. for CDS SC integrator
Reply #1 - Mar 12th, 2010, 3:31am  
Analysis statements:

simulatorOptions options reltol=1e-3 vabstol=1e-6 iabstol=1e-12 temp=27 \
   tnom=25 scalem=1.0 scale=1.0 gmin=1e-12 rforce=1 maxnotes=5 maxwarns=5 \
   digits=5 cols=80 pivrel=1e-3 sensfile="../psf/sens.output" \
   checklimitdest=psf
pss  pss  fund=100M  harms=100  errpreset=moderate  saveinit=yes
+    writefinal="final.ic"  swapfile="swap"  method=gear2only
+    annotate=status
pnoise  (  net0140  net0112  )  pnoise  start=1  stop=50M  dec=10
+       maxsideband=100  annotate=status

Signal sources (only clocks active):
V14 (phi2 0) vsource type=pulse val0=0 val1=1.5 period=10.0n delay=0 \
       rise=150.00p fall=150.00p width=4.0n
V15 (phi1 0) vsource type=pulse val0=0 val1=1.4 period=10.0n delay=4.9n \
       rise=150.00p fall=150.00p width=4.5n
Back to top
 
« Last Edit: Mar 12th, 2010, 9:47am by mvaibhav »  
View Profile   IP Logged
Pages: 1
Send Topic Print
‹ Previous topic | Next topic ›
« Home ‹ Board
The Designer's Guide Community Forum » Powered by YaBB 2.2.2!
YaBB © 2000-2008. All Rights Reserved.
Copyright 2002-2024 Designer’s Guide Consulting, Inc. Designer’s Guide® is a registered trademark of Designer’s Guide Consulting, Inc. All rights reserved. Send comments or questions to editor@designers-guide.org. Consider submitting a paper or model.