The Designer's Guide Community
Forum
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines. Nov 19th, 2017, 4:31am
  HomeHelpSearchLoginRegisterPM to admin  
 
Pages: 1
Send Topic Print
Question about NoiseType = Jitter (Read 64 times)
JV
New Member
*
Offline



Posts: 4
Belgium
Question about NoiseType = Jitter
Oct 22nd, 2017, 1:19am
 
Hi all,

I have some confusions about my simulation setup for the noise of a VCO + buffer circuit, which is used inside a PLL.

The buffer converts the sinusoidal signal from the VCO to rail-to-rail square-wave signals which are driving subsequent frequency dividers.
Since the frequency dividers are edge-triggered, I'm using PSS+PNOISE analysis with NoiseType=jitter.

I am using Cadence version IC 6.1.7

- When I tick the NoiseType = jitter box, the PNOISE form talks about "PM jitter for autonomous circuits", shouldn't this be FM jitter since it's an autonomous circuit?

- When the simulation finishes and I go to the "Direct Plot" form, I can choose between Jee, Jc and Jcc jitter. However, I thought that Jee was defined for driven circuits only? What does Jee represent in this case?

Could someone explain please? Many thanks!
Back to top
 
 
View Profile   IP Logged
Pages: 1
Send Topic Print
Trouble viewing this site? Copyright © 2002-2014 Designer's Guide Consulting. 'Designer's Guide' is a registered trademark of Designer's Guide LLC. All rights reserved.

Our colleges are not as safe as they seem. Sexual assault is pervasive and the treatment of the victim by the adminstration is often as damaging as the assault: Campus Survivors, Campus Survivors Forum.

Some of our other sites that you might find useful: QuantiPhy.