[SI-LIST] Re: Layout service recommendations
- From: Michael_Greim@xxxxxxxx
- To: martin@xxxxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Wed, 31 Jul 2002 17:29:01 -0500
At previous small companies where I was driving the decision
of who would design the boards, I was faced with a
similar dilemma. While your mileage may vary, I can
say that I was very pleased with the work that I got
from QC Graphics out of Dallas, www.qcg.com . Granted,
I drove the SI rules, but they did things as expected.
I believe that they have done Ghz level signalling designs
and rambus.
I don't know that you are ever going to get anyone to
guarantee the quality of the work. That is why vendors have
clients sign off on the work. You could always go to
an SI consulting group for rulesets, apply the contraints
to your board file and then check for adherance.
I was actually informed in writing once from a vendor
that did some dubious work, that their official policy
was that they were not responsible for the quality or
the content of their work. (pretty scary stuff) Make sure
that you do your due diligence and get recommendations.
Boilerplate Disclaimer:
The opinions expressed are my own and do not necessarily
represent the opinions of Dell, its employees, vendors,
competitors, affiliates or their pets.
Joe Bob says check em on out.......
Note that I am obviously not an employee or spokesmodel
for the company.....8-)
best regards,
Michael
-----Original Message-----
From: Martin Euredjian [mailto:martin@xxxxxxxxxxxxxx]
Sent: Wednesday, July 31, 2002 4:57 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Layout service recommendations
Being almost ready to go to layout I've been thinking about the issues of
sending a design out to a service bureau instead of doing it in-house.
Unless you work for a large corporation (I don't) you might not have access
to the $100K+ EDA tools and support infrastructure (budget, bodies,
equipment, etc.) you might need to produce good designs that work "out of
the box".
My particular design is a small 5x7 in board that has a 1.5Gb/s front end
which gets deserialized and fed into FPGA's etc. Most internal frequencies
are in the 100 to 200 MHz range, with wide busses.
Is it reasonable to assume that a good layout service can get this right the
first time? What should one look for? Are there any rules-of-thumb in
terms of cost? What guarantees should one demand? What should be the
hand-off process? What's the best way to assure success?
Much like the list of recommended PCB houses, it might be nice to assemble a
list of high-speed-capable layout service houses. I'll volunteer to compile
and post to this list.
Thank you,
===============================
Martin Euredjian
eCinema Systems, Inc.
voice: 661-305-9320
fax: 661-775-4876
martin@xxxxxxxxxxxxxx
www.ecinemasys.com
===============================
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