[SI-LIST] Re: Inexpensive SI software

This is a pretty good assessment of both tools.

Lee


> [Original Message]
> From: <alex@xxxxxxxx>
> To: <david.pollum@xxxxxxxxxxx>; <si-list@xxxxxxxxxxxxx>
> Date: 1/16/2010 4:57:34 AM
> Subject: [SI-LIST] Re: Inexpensive SI software
>
> Hi Dave,
>
> Altium is very good at Schematic+PCB and I've been a very happy user for
> the last 10 years.
>
> Having said that, the SI and Spice simulation part of Altium is not really
> useful for anything.  Figuring out how to add the right model (and in the
> format that _Altium_ want) is a pain.  After reading the documentation and
> trying to import some SPICE models for a few days, I gave up.  I've not
> found yet how to properly import IBIS models in Altium... but I look at
> this over a year ago.
>
>
> I'm using LTSpice (free) when I need to do simple Spice simulations.  At
> least, I get a results without spending DAYS importing Spice models.
>
>
> As a happy customer of Hyperlynx, I can really recommend that tool.  You
> can buy only the "LineSim" part of it, and it should be cheaper that the
> complete LineSim/PCB/PI/... product.  With LineSim, you'll be able to
> perform 99% of what you said you want to simulate.  The big advantage is
> that you're going to start simulating the SAME day you get the tool :) and
> get good results.  Try to get a 30 days fully functional evaluation
> version from Mentor.
>
>
>
> Regards,
>
> Alexandre Desnoyers
>
>
>
> > All:
> > It doesn't have to be HyperLynx ;)  It could be some other product.  I
> > don't know anything about
> > Hspice, and at $12K, I can't afford it.  BTW, does anyone know what
> > Altium's Designer product's SI
> > module is like.
> >
> > -Dave Pollum
> >
> >
> > Joel Brown wrote:
> >> Although we have Hyperlynx, I find myself using Hspice instead.
> >> The drawback is you have to manually enter models in a text file but it
> >> has
> >> a lot of flexibility. I find Hyperlynx very clumsy when it comes to
> >> using
> >> different types of models such as IBIS, Hspice, RGLC, etc.
> >> I think Hspice costs around $12K. Often IC vendors can only provide
> >> Hspice
> >> models and then you have no choice anyway.
> >>
> >>
> >> -----Original Message-----
> >> From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]
> >> On
> >> Behalf Of Dave Pollum
> >> Sent: Thursday, January 14, 2010 3:47 PM
> >> To: si-list@xxxxxxxxxxxxx
> >> Subject: [SI-LIST] Inexpensive SI software
> >>
> >> I've been doing some freelance PCB layout using a low cost PCB CAD
> >> software
> >> (Cadsoft's EAGLE).  I'm
> >> getting into situations designing denser 4 layer boards where it would
> >> handy
> >> to use an SI tool.  I'm
> >> concerned about rise/fall times of 1 - 2 ns or faster signals,
> >> crosstalk,
> >> the effects of long
> >> traces, and switching layers (top to bottom), etc.  I've download the
> >> HyperLynx demo (BoardSim &
> >> LineSIM), and it looks really cool.  But I can't actually use the demo
> >> to
> >> anything real.  And I
> >> suspect I can't afford it.  I'd like to spend no more than $4K(USD). 
As
> >> an
> >> alternative, I've
> >> considered buying Altium's Designer software ($4K) that claims to have
> >> built-in SI abilities.  Are
> >> Altium's SI features any good?
> >>
> >> Suggestions, anyone?
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