Re: [SI-LIST] : Power/Gnd Pin Input Impedance

Aubrey Keith Sparkman (asparky@earthlink.net)
Tue, 12 Jan 1999 09:52:53 -0600

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Eric,

The simplest model for your ICs Power/Ground input impedance may be a VERY lossy capacitor. But the desired complexity of the model needs to be specified in terms such as bandwidth or frequency range, digital vs narrow band
analog, etc. Consideration should also be given on whether to separate the package parasitics from the silicon (GaAs, or whatever) parameters, especially if your IC has multiple Power and Ground pins.

Good Luck,
Aubrey Sparkman

ycchien wrote:

> Dear SI-List members,
> What is the input impedance looking into IC's Power/Gnd pin? How to
> measure it?
> Thanks.
>
> Eric Chien
> Assistant Researcher
> Synchrotron Radiation Research Center
> Taiwan, R.O.C.
> ycchien@alpha1.srrc.gov.tw
>
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