[SI-LIST] Re: SI software for Cadence
- From: "Alex Slavec" <aleksanders@xxxxxxxx>
- To: <richard.moffat@xxxxxxxxxxxxxxxxxxx>
- Date: Tue, 19 Aug 2003 08:21:49 +1000
Hi Richard,
As you can expect, Cadence Specctraquest will provide the most
integrated solution when using Allegro; both use the *.brd database
file. Depending on your SI speeds (>3GHz), you may need to add HSpice to
your option list in addition to the power plane analysis package.
Specctraquest can take either your physical track topology or the
Manhattan length for a non-routed signal and then by providing
appropriate models the tool will draw appropriate waveforms at various
points on along the signal path. Like many other board level simulators,
one of the disadvantages with SpecctraQuest is the lack of detailed
modeling ability, in other words, IBIS model is the only type of device
model that can be used effectively. Therefore, reliable behavioral
models have to be evaluated prior to any analysis. Cadence claimed to
have demonstrated this product to 3GHz. For detailed analysis above the
3GHz level, Cadence recommends using Hspice models. At the 10GHz level,
behavioral models may no longer be valid meaning that IBIS models should
not be operated at this level.
I don't have any hands on experience with the latest version of
Hyperlynx, however I believe that this version can import an Allegro
file; perhaps someone can verify this, and if so is the import 100%
effective.
The Sigrity tools can import layout info from the Allegro *.brd file to
be used in power plane analysis.
I hope this helps.
Cheers,
Alex
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of richard moffat
Sent: Tuesday, 19 August 2003 6:57 AM
To: <
Subject: [SI-LIST] SI software for Cadence
Hi all
We are in the telecommonunication indistry. What are people using for
SI=
=20when they have Cadence Allegro as the layout package? (I'm referring
=
to both SI and powerplane analysis.)
I have so far narrowed it down to (in rough order)
=20- SpecctraQuest
=20- Sigrity
=20- HyperLynz (GHz option)
=20- Ansoft
=20- Mentor tools?
Any success stories or sob stories would be appreciated !
Cheers,
Richard
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