Re: [SI-LIST] : Fast edges with limited plane capacitance

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From: Larry Smith (ldsmith@lisboa.eng.sun.com)
Date: Fri Mar 17 2000 - 13:23:13 PST


Mike - thanks for pointing this out! Slipped a bit..
My earlier message should have said:

        vel = 1/sqrt(La*Ca)
        
regards,
Larry

> Date: Fri, 17 Mar 2000 11:51:40 -0800
> From: Mike Jenkins <jenkins@lsil.com>
> X-Accept-Language: en
> Mime-Version: 1.0
> To: "Smith, Larry" <Larry.Smith@eng.sun.com>
> Subject: Re: [SI-LIST] : Fast edges with limited plane capacitance
> Content-Transfer-Encoding: 7bit
>
> Larry,
>
> Maybe you meant to write "vel = 1/sqrt(La*Ca)" below?
>
> Mike
> >
> > The inductance the power planes is calculated from vel = sqrt(La/Ca)
> > where La is the spreading inductance (Henries per square of
> > material, just like spreading resistance in a sheet of material).
> >
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Mike Jenkins Phone: 408.433.7901 _____
> LSI Logic Corp, ms/G715 Fax: 408.433.7461 LSI|LOGIC| (R)
> 1525 McCarthy Blvd. mailto:Jenkins@LSIL.com | |
> Milpitas, CA 95035 http://www.lsilogic.com |_____|
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