User Guide

Chapter 12 Monte Carlo and sensitivity/worst-case analyses
288
Temperature considerations in statistical analyses
The statistical analyses perform multiple runs, as does the
temperature analysis. Conceptually, the Monte Carlo and
worst-case loops are inside the temperature loop.
However, since both temperature and tolerances affect the
model parameters, OrCAD recommends not using
temperature analysis when using Monte Carlo or
worst-case analysis.
Also, you cannot sweep the temperature in a DC sweep
analysis or put tolerances on temperature coefficients
while performing one of these statistical analyses. In
EXAMPLE.DSN, the temperature value is fixed at 35
° C.
Figure 74 Example schematic EXAMPLE.DSN.
Re
f
er to Temperature Effects on
M
onte Carlo Analysis in the
A
pplication Notes manual for more
information.
T
h
e examp
l
e sc
h
ematic EXAMPLE.DSN is
provided on the OrCAD installation CD.
Pspug.book Page 288 Wednesday, November 11, 1998 1:14 PM