[SI-LIST] Re: Analog&Digital Power planes

Suresh, isn't this the second time around for your question?  It sounds 
like you need expert help to plan your board / system architecture.  The 
San Jose office can certainly draw from a rich community of experts to plan 
the system and board architecture to keep you guys out of trouble.  If 
Redpine does not have the internal expertise to perform these critical 
architectural functions, and Redpine intends to succeed, then I strongly 
suggest that Redpine contract with a consultant(s) or group they are 
comfortable with.  Can Redpine really afford to find out after the product 
is built that it cannot perform as intended?

Steve.
At 01:36 PM 5/15/2004 +0530, suresh wrote:

>Hello SI Experts ::
>
>We have three PCb cards in our system.The first one  is a FPGA board and
>the second board is a analog front end card and contains a)D to A
>converters b)A to D converters and the third board is a RF Transceiver
>board.The "D to A" coverter gives input to the RF board and the "A to D"
>converter gets its inputs from the RF card.
>
>The power supply to the second board is given from the first board.Now on
>the second board the power planes are split into two planes a) Analog
>supply plane and 2)Digital supply plane.Both the planes are joined at a
>single point through a RF beed.
>
>similarly the grounds are also split into two planes and joined at a single
>point.
>
>QUEST::The power supply comming from the FPGA card needs to be taken as
>Digital power or the Analog power for the second card.Can somebody pls try
>and  reason it out.
>
>Best Regards
>--
>suresh
>-
>
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