sanjay wrote on Jun 9th, 2009, 4:07am:I am doing pnoise analysis for PFD+Charge pump.
But, when I am plotting phase noise, it is giving following error:
*Error* quotient: can't handle (nil / 1.414214)
What vendor's simulator do you use ?
There are many simulators which have analysis called as Pnoise.
I assume Pnoise of Cadence Spectre under Cadence ADE.
Show me output equation.
You can get it by enabling "Add Output" if you use Direct Plot Form of ADE,