[SI-LIST] Re: Impedance Controlled Board Production Vs Normal Board Production

  • From: DAVID CUTHBERT <telegrapher9@xxxxxxxxx>
  • To: "Loyer, Jeff" <jeff.loyer@xxxxxxxxx>
  • Date: Thu, 5 Jan 2012 08:37:19 -0700

And you can simulate your circuit to explore how much T-line impedance
mismatch it can tolerate.
Dave Cuthbert
On Jan 5, 2012 8:24 AM, "Loyer, Jeff" <jeff.loyer@xxxxxxxxx> wrote:

> Perhaps I'm the only one who is finding it ironic that, on a "Signal
> Integrity" reflector list, "Impedance Controlled" isn't considered
> "Normal".  I haven't had the luxury of not specifying impedance control
> since a small 33MHz PCI card design, many years ago.
>
> I'm afraid Jayasuryan that you won't find the answer you're looking for on
> an e-mail thread, or it is going to be a long, drawn out, painful affair.
>  You have a lot of work to do to understand what impedance control is and
> how it relates to signal integrity.  I would recommend starting with the
> books that have been listed many times on this list.  You can also search
> the archives for "impedance control" to find discussions about different
> opinions on how much is enough.
>
> Good luck in the new year,
> Jeff Loyer
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of steve weir
> Sent: Monday, January 02, 2012 6:23 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: Impedance Controlled Board Production Vs Normal
> Board Production
>
> Suppose as you like.  Hope as you might.  What you don't contract is not
> guaranteed.
>
> Steve.
> On 1/2/2012 5:56 AM, Jayasuryan KG wrote:
> > Dear Experts,
> >
> >
> >
> > Happy New Year!!
> >
> >
> >
> > I have question regarding the impedance controlled board production!
> > Is there any special process to produce impedance controlled board
> >
> > rather than the normal production?
> >
> >
> >
> > Suppose if I go with normal production for a  impedance controlled board
> (the design has been done to meet the impedance) what are the possible
> issues can happen?
> >
> >
> >
> > Looking for your immediate response. Thanks in advance.
> >
> >
> >
> > Best Regards,
> >
> > - Jayasuryan
> >
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>
> --
> Steve Weir
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