venki_vlsi
Quote:can u plz tell how to draw vco gain in cadence using spectre.(vcntl vs frequency).we r using cadence gui interface.we can operate with mouse.tell me how to do it in gui.
I use the following method in Cadence:
1. Do parametric analysis (Tools->Parametric analysis...), to set vcntl as the sweep parameter and change it from V1 to V2
2. Start the simulation (Choose Transient analysis in the Analog Environment Window)
3. Use caculator to choose the output of the VCO, then use Clip (Special Function) to choose appropriate time range and Frequency Function to see the curve of Vcntr Vs. Frequency.
Is it a correct way? ::)