[SI-LIST] Re: AC Coupled Signals
- From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
- To: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>, "npatel@xxxxxxxxxx" <npatel@xxxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Mon, 24 Sep 2007 11:42:24 -0700
I meant to add that this would imply that location is relatively
unimportant. Others may have data that says otherwise.
> [Original Message]
> From: Lee Ritchey <leeritchey@xxxxxxxxxxxxx>
> To: npatel@xxxxxxxxxx <npatel@xxxxxxxxxx>; <si-list@xxxxxxxxxxxxx>
> Date: 9/24/2007 11:37:12 AM
> Subject: [SI-LIST] Re: AC Coupled Signals
>
> Nikil,
>
> I have made measurements on test PCBs and the location is not all that
> important. In identical pairs, one with AC coupling capacitors and the
> other without, the loss vs. frequency is virtually identical at leas out
to
> 6 GHz. That would be 12 Mb/S.
>
> Lee Ritchey
>
>
> > [Original Message]
> > From: <npatel@xxxxxxxxxx>
> > To: <si-list@xxxxxxxxxxxxx>
> > Date: 9/24/2007 10:21:37 AM
> > Subject: [SI-LIST] AC Coupled Signals
> >
> > Hi all,
> > In case of AC coupled signals does anyone know of an optimum placement
> > for the caps? I mean should they be placed near the source, receiver,
> > middle of the transmission line?
> > How much difference does it make in the opening of the eye?
> > The signals are differential CML running at 3.0Gbps
> >
> > Thanks,
> > Nikhil
> >
> >
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>
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