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Subject:	Re: Differential Pair Length Matching (LVDS)
From:	Susy Webb <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Fri, 30 Sep 2005 09:50:26 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (40 lines)

Look for the skew rate on the data sheet of the receiving part. It will give you the tolerance based on the speed of the signal.

Susy

>
> From: Bob McCreight <[log in to unmask]>
> Date: 2005/09/30 Fri AM 09:28:26 CDT
> To: [log in to unmask]
> Subject: [DC] Differential Pair Length Matching (LVDS)
>
> I saw a similar question over on the SI list and thought it would be interesting to get some designer input....
>
> What is the typical tolerance one should aim for when routing a group of differential pairs?
> Is it +/- 10% or more like +/- 100 mils?
>
> I have a LVDS design with 8 banks of 11 pairs. Feel free to explain LVDS and any particular rules that technology may have.
>
> Thanks!
> Bob
>
>
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