[SI-LIST] Re: anlog and digital power plane isolation with ferrite bead good idea?

  • From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
  • To: "Alan Hilton-Nickel" <alan.hiltonnickel@xxxxxxxxxx>
  • Date: Mon, 3 Jan 2011 12:22:17 -0800

Yes, I forget that attachments aren't allowed on the reflector.  The tool on 
Altera's web site is PDN_Tool_V10.  I believe it has its origins at SUN 
since Larry Smith is the author and he is an alumnus of SUN's  PDN design 
group.

Lee Ritchey

--------------------------------------------------
From: "Alan Hilton-Nickel" <alan.hiltonnickel@xxxxxxxxxx>
Sent: Monday, January 03, 2011 11:07 AM
To: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
Cc: "Dong Kim" <kimdongsik_us@xxxxxxxxx>; "steve weir" <weirsi@xxxxxxxxxx>; 
<si-list@xxxxxxxxxxxxx>; "Istvan Novak" <istvan.novak@xxxxxxx>; "liuluping 
41830" <liuluping@xxxxxxxxxx>
Subject: [SI-LIST] Re: anlog and digital power plane isolation with ferrite 
bead good idea?

> Unfortunately Lee forgot we can't do attachments on the list. I noodled
> around and found the tool on Altera's
> website:http://www.altera.com/technology/signal/power-distribution-network/sgl-pdn.html
> This looks very cool. Thanks for mentioning it, Lee!
>
> Alan Hilton-Nickel
> Oracle, Santa Clara, CA
>
>
>
> On 1/3/2011 9:44 AM, Lee Ritchey wrote:
>> Dong,
>> I have attached a PDS design program from Altera.  Notice that it does 
>> not
>> include any ferrite beads.  same kind of thing is available from Xilinx.
>>
>> Yes, old applications notes from both Altera an Xilinx said to use 
>> ferrite
>> beads.  This was never good advice and has finally been taken from their 
>> app
>> notes, but not before may engineers got conned into using ferrite beads.
>>
>> Lee
>>
>> --------------------------------------------------
>> From: "Dong Kim" <kimdongsik_us@xxxxxxxxx>
>> Sent: Monday, December 27, 2010 4:03 PM
>> To: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>; "steve weir"
>> <weirsi@xxxxxxxxxx>; <si-list@xxxxxxxxxxxxx>
>> Cc: "Istvan Novak" <istvan.novak@xxxxxxx>; "liuluping 41830"
>> <liuluping@xxxxxxxxxx>
>> Subject: [SI-LIST] anlog and digital power plane isolation with ferrite 
>> bead
>> good idea?
>>
>>
>>
>
>
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