Re: Eye Patterns

Greg Edlund (grege@chensys.com)
Mon, 22 Jan 1996 17:33:51 -0600

>Greetings to All!
>
>I am wondering if there is a preferred method for simulation of eye
>patterns. I have seen only one vendor (Silvaco - "SmartSpice") who
>advertises this capability. I wonder if HSPICE or PSPICE have add-ons
>which I can purchase to allow accurate eye pattern simulation.
>
>Please let me know...what do you use?
>
>Thanks,
>Fran
>
>____________________________________________________________________
>|__________________________________________________________________|
>|| || ||
>|| Frances G. Hart || e-mail: fghart@mmm.com ||
>|| 3M || ||
>|| Austin, Texas || Phone: (512)984-6869 ||
>||______________________________||__FAX:_____(512)984-5940________||
>|__________________________________________________________________|
>
>

If I understand eye patterns correctly, a key component
is jitter. Wouldn't you need a REALLY good statistical
model for the IC, including the clock distribution, as
well as a simulator that efficiently handles Monte Carlo
analysis? The only IC vendor who handles Monte Carlo
analysis on a regular basis that I've seen is IBM, and
they have their own simulation language (ASTAP).

I'd be willing to bet not many people simulate eye patterns;
they probably try to get as close as they can and then
build some prototype hardware...

--
Greg Edlund                o---/\/\/\---+-----+---o
Circuits and Modeling                   |     |
Chen Systems Corp.                      |      )
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