Noise Contribution and Simulation in Cadence.

Dear Yasir,

Yasir Shafi said:

I would like to know how to simulate noise simulation in cadence,

This is a rather broad question as a noise simulation can span from a small-signal to a transient noise analysis depending on your circuit and circuit requirements. If I assume your specific interest is in performing a small-signal AC analysis of a current mirror over frequency, you might start by viewing the Cadence introductory small-signal AC noise analysis video at URL:

support.cadence.com/.../ArticleAttachmentPortal

Yasir Shafi said:

I am trying to simulate a simple current mirror and trying to find how much noise it contributes to the circuitry. I biased the current mirror as per my requirement and added a pin at the output in the schematic where it has to go inside the circuitry. I am using noise and noise separation analysis. Also, I would like to know how to read the Noise Summary from Print and in the Plotting of the data. 

If I examine the analysis panel you have provided and understand your interest, I am still not clear if you are interested in quantifying the actual current noise of the current mirror output or the voltage noise it presents when the current is passed through some impedance. In the former case, your noise will have the units of A/root Hz or A^2/Hz and in the latter case the units will be in V/root Hz or V^2/Hz. Which is most important depends on the application and your circuit requirements.

The video at the URL I provided discusses the noise separation feature.

I hope this helps Yasir,

Shawn