Re: [SI-LIST] : BGA vs Leaded package electrical performance

Laurence Michaels (lmichael@techmail.gdc.com)
Fri, 5 Mar 1999 09:24:41 -0500

[CCed to list]

OK, I'll bite... Where do you find a frequency domain simulator, such as
the one you almost mention? I am kind of new at this, and IIRC, SPICE
is mainly time-domain, though it does have a FFT (from waveform to
frequency content). Quad is also time domain, from what I can see.

-- Laurence Michaels
Simulation Support Engineer, General DataComm (203)758-1811.
Please do not add me to any mailing lists.
ICBMnet: 41.5 N 73.1 W

Ron Miller wrote:
>
> Hi guys
>
> In order to understand and to simulate the CQFP and CBGA packages the
> frequency domain is the best way to go because all lead inductances
> also have
> distributed capacitance. Frequency domain models of transmission
> lines are
> as close to reality as we can get, and are available only in frequency
> domain
> simulators. Some of these simulators also have FFTs and convolution
> to get
> back to the time domain for waveform analysis.
>
> So, do not get hung up on inductance and capacitance only. There is
> more than
> meets the eye.
>
> Ron Miller
>
<snip previous quoted material>

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