Hi Frank

I read your post in previous thread
http://www.designers-guide.org/Forum/YaBB.pl?num=1224609785/25#25
You mentioned that jitter could be analyzed using transient noise,
and it has a good matching with that of pnoise.
I don't know how to calculate jitter using transient simulation,
because in the eyeDiagram, Ｉcan only see the peak-to-peak jitter.
I have no idea how to get the rms value.
Could you please provide more information about how to do this?
Thanks a lot.

regards,
YCY

Hi, Sheldon

Thanks for your reply.

I just wonder how to use transient simulation to find out jitter.
For example, if I connect a chain of inverters and apply a clock signal at input,
then how do I get the edge-to-edge jitter using transient simulation?

Frank mentioned that one can use eyeDiagram function in the calculator to do so,
and I am curious how to do that.

BTW, you said I can use "rms( period_jitter(Vsig) - avg( "period_jitter(Vsig)) in the calculator.
Is period_jitter() a calculator function?
I cannot find that in the calculator in Spectre.
Thanks

regards,
YCY

ywguo wrote on Aug 7^th, 2011, 5:21am:


Hi, Yawei

Thanks for your response.
No wonder I cannot find it in my calculator (I use IC5141).

Nonetheless, I am still curious about how to get jitter using eyeDiagram().
Does anybody know how to do that?

regards,
YCY