FreeLists / si-list / [SI-LIST] Re: Effects of overshoot/undershoot on long-term reliability

["Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>]

Better check the cost of doing buried resistors first.  You might not like
it.  You might also discover that it takes more board space.


> [Original Message]
> From: Mikhail Matusov <matusov@xxxxxxxxxxxx>
> To: <si-list@xxxxxxxxxxxxx>
> Date: 3/9/2006 10:22:11 AM
> Subject: [SI-LIST] Re: Effects of overshoot/undershoot on long-term
reliability
>
> Thanks John. We are actually looking into this option right now...
>
> I can't believe I typed to buy the bullet in my last post! :) No, I am not
> in the arms trade business :)
>
> Regards,
> =======================
> Mikhail Matusov
> Hardware Design Engineer
> Square Peg Communications
> Tel.: +1 (613) 271-0044 ext.231
> Fax: +1 (613) 271-3007
> http://www.squarepeg.ca
>
>
>
> ----- Original Message ----- 
> From: "Andresakis, John" <John.Andresakis@xxxxxxxxxxxxx>
> To: <matusov@xxxxxxxxxxxx>; <si-list@xxxxxxxxxxxxx>
> Cc: "'Daniel Brandler'" <dbrandler@xxxxxxxxxxxxx>
> Sent: Thursday, March 09, 2006 12:10 PM
> Subject: RE: [SI-LIST] Re: Effects of overshoot/undershoot on long-term
> reliability
>
>
> > Mikhail,
> >
> > One last thing to consider before you redesign the board to add discrete
> > resistors on the surface, is to consider embedded resistors.  By using a
> > material such as Ohmega-ply you can actual form resistors inside your
> board
> > and not have to add discrete on the surface. Depending on the value you
> > need, you may be able to simply replace a segment of your signal trace
> with
> > a resistive area and not even have to change your inner layer lay-out.
> Dan
> > Brandler from Ohmega can help you with this. I  have copied him on this
> > email and their web-site is www.ohmega.com.  Hope this helps.
> >
> > Best Regards,
> >
> > John Andresakis
> > VP of Strategic Technology
> > Oak-Mitsui Technologies, LLC
> > 80 1st Street Hoosick Falls, NY 12090
> >
> > Office:(518) 686-8088
> > Cell:   (518) 368-1556
> >
> >
> > -----Original Message-----
> > From: Mikhail Matusov [mailto:matusov@xxxxxxxxxxxx]
> > Sent: Thursday, March 09, 2006 11:00 AM
> > To: si-list@xxxxxxxxxxxxx
> > Subject: [SI-LIST] Re: Effects of overshoot/undershoot on long-term
> > reliability
> >
> > Jai,
> >
> > Yes, I thought of this too. The chip doesn't have any drive
> > strength/impedance control. With regards to lowering the voltage, I
don't
> > have much room for additional regulation and 10% is not likely to fix
the
> > problem anyway... I think we are going to buy the bullet and redesign
the
> > board to include the resistors.
> >
> > Thanks,
> > =======================
> > Mikhail Matusov
> > Hardware Design Engineer
> > Square Peg Communications
> > Tel.: +1 (613) 271-0044 ext.231
> > Fax: +1 (613) 271-3007
> > http://www.squarepeg.ca
> >
>
>
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