In "Simulating Switched-Capacitor Filters with SpectreRF"(
http://www.designers-guide.org/Analysis/sc-filters.pdf) Listing 1:
unsmpldNoise (out 0) pnoise start=0_Hz stop=10/TCLK maxsideband=100
smpldNoise (out 0) pnoise start=0_Hz stop=0.5/TCLK maxsideband=100 \
noisetype=timedomain noisetimepoints=[0] \
numberofpoints=1
Differente parameters bettween "
unsmpldNoise" and "
smpldNoise" is "stop", and so the power spectral density of the 2 pnoise analyse is greatly different.
my question is :
what does parameter "stop" mean in .pnoise analysis and how can i explain the phenomena occured above?