[SI-LIST] Re: Multilane SERDES Current

  • From: steve weir <weirsi@xxxxxxxxxx>
  • To: Chris Adam <chris.adamsipi@xxxxxxxxx>
  • Date: Thu, 13 May 2010 21:21:47 -0700

Chris, I submit that barring additional information, you are compelled 
to scale linearly.

Steve.
Chris Adam wrote:
> Thanks Steve. I am trying to estimate the total current to be supplied 
> by the decaps and the power supply for n-lanes SERDES given that 1 
> lane current is accurately known. 
>
>
> -Chris
>
> On Wed, May 12, 2010 at 7:05 PM, steve weir <weirsi@xxxxxxxxxx 
> <mailto:weirsi@xxxxxxxxxx>> wrote:
>
>     Are you trying to figure out the RMS CM current as opposed to the
>     worst-case?  Or are you trying to estimate current that belongs to
>     a shared element that will not be repeated 1:1?
>
>     Steve
>     Chris Adam wrote:
>
>         Hi,
>          We are doing a PI analysis on a multi lane SERDES. Current
>         profile is
>         known for  1 SERDES lane. Given this 1 lane current profile,
>         how do we
>         derive current profiles for n-lane operation ? If we simply
>         multiply 1
>         SERDES lane current by n, it results in a pessimistically high
>         current. I
>         would appreciate if anybody shares their experience or
>         thoughts in this
>         regard,
>
>         - Chris
>
>
>
>          
>
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>     -- 
>     Steve Weir
>     IPBLOX, LLC 150 N. Center St. #211
>     Reno, NV  89501 www.ipblox.com <http://www.ipblox.com>
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>


-- 
Steve Weir
IPBLOX, LLC 
150 N. Center St. #211
Reno, NV  89501 
www.ipblox.com

(775) 299-4236 Business
(866) 675-4630 Toll-free
(707) 780-1951 Fax


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