[SI-LIST] Re: Double-AC coupling
- From: Venkat Pappu <ppreshu@xxxxxxxxx>
- To: Chris.Cotton@xxxxxxxxxxx
- Date: Tue, 11 Nov 2014 13:15:19 -0800
Depends on the Impedance of the cap at the data rate.
Location of the cap, it will be better if it is closer to the receiver.
-Prashant
On Tue, Nov 11, 2014 at 8:02 AM, Cotton, Chris <Chris.Cotton@xxxxxxxxxxx>
wrote:
> You don't mention data rate but generally a link that runs successfully
> with internal AC coupling will also run with additional external AC
> coupling albeit with reduced margins. The amount of reduced margin will
> depend on how much of a discontinuity the external AC capacitors (including
> any additional vias or etch that me required to get the AC cap) presents.
>
> Chris
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of bala
> Sent: Tuesday, November 11, 2014 2:02 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Double-AC coupling
>
> Hi,
> What will happen if a link has two set of AC coupling(internal as well as
> external).
>
> I know this will reduce the total effective capacitance, does this
> contribute to Link error?
>
> --
> bala
>
>
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