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Transient Sensitivity in Spectre (Read 3886 times)

Christoph New Member Offline Posts: 3 Germany	Transient Sensitivity in Spectre Feb 29^th, 2008, 10:00am Dear All! Why is there no tranisent sensitivity in spectre? I've made a delay measurement with spectreMDL and want to find the sensitivity of this delay to some circuit parameters. Is this possible in spectre? Thanx! Christoph
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Stefan Senior Member Offline Posts: 124	Re: Transient Sensitivity in Spectre Reply #1 - Mar 1^st, 2008, 2:35am I don't think that there is something like "transient sensitivity". You could do a transient simulation, save the operating point at a desired time and then use an ac (sensitivity) analysis.
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HdrChopper Community Fellow Offline Posts: 493	Re: Transient Sensitivity in Spectre Reply #2 - Mar 5^th, 2008, 6:02pm Hi Christoph, Actually worst casing for transient simulation is somehow a "transient sensitivity" analysis. You should be able to change your model parameters and see the effect on the transient analysis, in particular in the delay you are interested in. Tosei.
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Christoph New Member Offline Posts: 3 Germany	Re: Transient Sensitivity in Spectre Reply #3 - Mar 5^th, 2008, 11:26pm Hi! Thank you all for your answers. Changing parameters by hand would work but is rather inefficient when there are many parameters. An adjoint sensitivity calculation would be good. Anyway, thanks for your help. Kind regards, Christoph
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HdrChopper Community Fellow Offline Posts: 493	Re: Transient Sensitivity in Spectre Reply #4 - Mar 7^th, 2008, 5:36pm Hi, You could still save some time if you run your transient analysis with an ocean script. You should write one in which you run each transient analysis for the set of values for each parameters you would like to change. Hope this helps Tosei
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