User`s guide

13
-
20 Monte Carlo and Sensitivity/Worst-Case Analyses
Settin
g
up the anal
y
sis
To analyze our filter, we will set up both an AC analysis and a
Monte Carlo analysis. The AC analysis sweeps 50 points per
decade from 100 Hz to 1 MHz. The Monte Carlo analysis is set
to take 100 runs (see Figure 13-9). The analysis type is AC and
the output variable that we are interested in is V(OUT). We will
select All in the MC Options box.
Creatin
g
histo
g
rams
Because the data file can become quite large when running a
Monte Carlo analysis and because we are only interested in the
output of the filter, we will place a voltage marker at the output
of the filter.
To collect data for the marked node onl
y
1
From the Analysis menu, select Probe Setup.
2
On the Probe Startup tab, choose the Automatically Run
Probe after Simulation option.
3
On the Data Collection tab, choose the At Markers Only
option.
4
Click OK.
Fi
g
ure 13-8
Chebyshev Filter
Fi
g
ure 13-9
Monte Carlo
Analysis Setup Example