[SI-LIST] Re: spice-impedance profile of pdn

Hi All

I am trying to simulate in LT Spice  to get impedance profile of power 
distribution network.

steps I am following are:

1: make a netlist of all cap, ind and resistors

2: connecting a 1A AC current source at node 1 (input) so as to make V=Z

3: connecting a dc path resistance from node 1 to ground

4: then do AC analysis and use .NET to get Z (impedance) at node 1

results I am getting does not seems to make sense

Can anybody suggest me something or do anybody has done this before and can 
give me sample netlist to get an idea.

regards
Nazish





      
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