Andrew Beckett
Senior Fellow
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Life, don't talk to me about Life...
Posts: 1742
Bracknell, UK
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Not really sure what your problem is. Rather than using AC analysis, why not use spectre's xf analysis? This will compute the transfer function from any source (by default) to the specified output - and then you can choose which source to plot the transfer function after the simulation has completed.
It means you can do all your power-supply transfer functions at the same time as looking at signal transfer functions.
Regards,
Andrew.
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