Sir, I am using the measurement tool for spectrum available with Cadence Virtuoso ADE. I am not doing the PSS analysis. After running the transient simulation, transient domain waveform can be given to the spectrum with proper start/stop time, sample count/freq, selecting the window type as rectangular, we can plot the FFT. It will display the SNR, SINAD, ENOB, SFDR etc.. I have applied a sinusoidal input from AnalogLib_hspice with amplitude 1V, frequency (100MHz * 8191/16384). Run for FFT is plotted with start/stop time of 0/163.84u. screenshot is inserted with this reply.
↧