output impedance simulation help

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Hi,

I'm trying to use spectre to get output impedance of following circuit


I can do AC sweep and use Vout/Iout to see the output impedance VS frequency. But in this way i can not see the influence of input square wave switching. If i want to see the influence of this square wave, should i use PSS or PSP simulation?

Thanks!
 

Hi Audioguru,

I have the power supply and the inverter is just the symbol i created. they are just not showing in this picture.

Audioguru said:
Your inverter has no part number and no power supply voltage.
Does your simulation software know these important things?
Click to expand...
 

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