[SI-LIST] Re: AC Coupled Signals
- From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
- To: "Edi Fraiman" <EdiFraiman@xxxxxxxxxxxxx>, npatel@xxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Mon, 24 Sep 2007 12:33:33 -0700
> [Original Message]
> From: Edi Fraiman <EdiFraiman@xxxxxxxxxxxxx>
> To: <npatel@xxxxxxxxxx>; <si-list@xxxxxxxxxxxxx>
> Date: 9/24/2007 12:08:12 PM
> Subject: [SI-LIST] Re: AC Coupled Signals
>
> Hi,
>
> I think that AC cap location is does not matter. You should be more
> aware that capacitance body might change the characteristic impedance of
> your transmission line. In this case you should adjust transmission line
> width.
> Actually is best described by Dr. Howard Johnson's "Potholes" analogy.=20
>
>
> Edi
>
>
> ---Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of npatel@xxxxxxxxxx
> Sent: Monday, September 24, 2007 12:51 PM
> To: si-list@xxxxxxxxxxxxx
> 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=20
>
>
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