[SI-LIST] Re: Hyperlynx vs. Hspice
- From: Fred Balistreri <fred@xxxxxxxxxxxxx>
- To: jonpowell@xxxxxxxxxxxx
- Date: Fri, 26 Sep 2003 14:41:27 -0700
Since Jon asked......Apsim auto extracts the Transmission lines in the
form
of W elements from Allegro, PADS, Mentor Board Station, Protel. It
builds
the Hspice circuit files with the Hspice transistor level or IBIS
models.
This includes crosstalk and full SI capability is supported. For anybody
needing this check out www.apsimtech.com.
Best Regards,
Jon Powell wrote:
>
> Converting HSPICE models to IBIS is not normally a job for a novice (in
> either SPICE, IBIS, or the expected circuit performance). For modern devices
> you have elements that cannot be supported by IBIS or IBIS-only simulators.
> There are some mixed SPICE/IBIS simulators out there but if your HSPICE
> models are encrypted, then you will still need a copy of HSPICE.
> On the other hand, trying to do anything approaching full board simulation
> with HSPICE alone can be a problem (problem 1: Where do you get the SPICE
> models for the tlines auto-extracted from your layout) and Hyperlynx is
> pretty good at this.
>
> As far as the model conversion to IBIS, you might check with Mentor
> Consulting or Scott McMorrow at teraspeed.
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Naveen Reddy
> Sent: Friday, September 26, 2003 10:38 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] HyperLynx vs Hspice
>
> Hi Everybody:
> I need to perform some high speed simulations (over 3GHz) for my
> backplane and I currently have the Mentor HyperLynx tool. I have run
> into a little problem. HyperLynx needs IBIS models for simulation
> purposes, whereas most of the vendors provide only spice models and not
> IBIS. Although HyperLynx can convert Spice models to IBIS, it does need
> a Spice simulator to do that.
>
> I am a little confused here and am hoping I can have these questions
> answered.
>
> 1. Can I use just Hspice to perform all my high speed simulations or is
> HyperLynx a better tool for this application?
> 2. Has anyone had experience with converting 3D spice models to IBIS?
> What are the tradeoffs?
> 3. HyperLynx has three levels of licenses - regular, EXT and GHZ. Which
> one should I be using?
>
> Thanks in advance.
>
> -Naveen.
>
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--
Fred Balistreri
fred@xxxxxxxxxxxxx
http://www.apsimtech.com
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