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PZ-analysis in spectre (Read 5512 times)

hchanda Community Member Offline Posts: 33	PZ-analysis in spectre Dec 07^th, 2006, 3:08pm Hi all, I am not at all aware of the PZ analysis in spectre. Can anyone please provide an example ? I would like to understand what input source implies. I tried looking into the manual, could not find any info. I am trying to find Poles and zeros in LDO. Thank you, hc
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sheldon Community Fellow Offline Posts: 751	Re: PZ-analysis in spectre Reply #1 - Dec 10^th, 2006, 6:59pm HC, Hopes this helps. Best Regards, Sheldon
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Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: PZ-analysis in spectre Reply #2 - Dec 12^th, 2006, 2:12pm It's also a good idea to read the documentation, since there is some... Look in cdsdoc or in the pdf files under <mmsimInstDir>/doc Andrew.
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hchanda

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Re: PZ-analysis in spectre
Reply #3 - Dec 12^th, 2006, 4:45pm

Thank you sheldon. But I do not understand the significance of the input probe, which is a voltage source.

Andrew, I tries searching in the cdsdoc but could not get the information that I am looking for.
I would like to know what is the purpose of the input probe ? If we have a multiple feedback system then how to
do the PZ analysis.

Thank you,
hc

« Last Edit: Dec 13^th, 2006, 9:45am by hchanda »

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Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: PZ-analysis in spectre Reply #4 - Dec 13^th, 2006, 8:31am Hi hc, The input probe and output probe are to allow it to compute the zeros. The poles are computed anyway. Even if there are multiple feedback paths, the poles and zeros are computed. This is explained even in "spectre -h pz" Regards, Andrew.
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