[SI-LIST] Re: What does it means my Power Plane Impedance

If new to SI and/or PI, a great book on the subject(s) is "Signal and Power 
Integrity - Simplified (2nd Edition)" by Eric Bogatin.

I've learned a lot from reading that book.

-Mark R.

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----- Original Message -----
From: "steve weir" <weirsi@xxxxxxxxxx>
To: "Shahbaz Assad" <shahbaz_assad@xxxxxxxxxxx>
Cc: si-list@xxxxxxxxxxxxx
Sent: Wednesday, September 8, 2010 4:41:58 AM
Subject: [SI-LIST] Re: What does it means my Power Plane Impedance

1. Power cavity impedance is the voltage response exhibited by a 
hypothetical current source placed at some specific location within the 
power cavity extents.

2. Low enough so that the additive noise from all sources remains below 
the allowable noise voltage for each load as attached.

3. It should be made as low as is needed.

4. Ohm's Law.

Steve
Shahbaz Assad wrote:
>
>
> Hi Experts,
>
> What does it means by power plane impedance while doing Power Integrity 
> analysis.
>
> The power plane impedance is kept at mili ohms for a wide range of 
> frequencies for better PI.
>
> Kindly guide me 
>
> 1. what does it means by power plane impedance?
> 2. what should be its nominal value?
> 3. For better PI, should its value be as small as possible like 2mOhms?
> 4. if yes? what is the reason.
>
>
> Thanks In advance. I am new to SI and PI
>
>
> Thanks,
> Shahbaz Assad
>
> System design Engineer - WhizzSystems, Inc.
>
> _____________________________________
> Skypes ID: sassad85 | 
> sassad@xxxxxxxxxxxxxxxx
>
>
>                                                                               
>
>
>
>
>
>
>                                         
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-- 
Steve Weir
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