I have a certain circuit and I want to see its ac performance when I send in certain noise as a signal. is there some option like noise source similar to sine etc signals in orcad….
I can make my noise file in excel an upload it as pwl signal, but i can run only transient analysis with it. I want to see the ac performance of my system.
I can generate noise by using some resistors at input, by this effects my later schematic.
is there a way to make a noise source other than these two options…..my frequency range is 100k to 220 Meg. and all my voltages would have a crest factor of 5.
to make it clear, i donot want to send noise by adding it to some kind of signal.instead i want to make noise as my signal.
Best Answer
You can simply simulate the noise source as an ac source. For ac analysis, you're only looking at the small-signal effects from a single frequency component of any signal (noise or intentional) anyway.
Crest factor is a way of describing how your signals are shaped if they are not sinusoidal. It doesn't have any importance in an ac analysis of noise behavior.