User`s guide

10 Monte Carlo and Sensitivity/Worst-Case Analyses

Tutorial: Monte Carlo Anal

sis of

a Pressure Sensor

In this tutorial, you will see how the performance of a pressure

sensor circuit with a pressure-dependent resistor bridge is

affected by manufacturing tolerances. You will use Monte Carlo

analysis features provided in Schematics and PSpice A/D to

explore these effects.

Drawin

the schematic

To begin, construct the bridge as shown in the schematic in

Figure 13-5.

Here are a few things you should know when placing and

connecting the symbols:

• To get the symbol you want to place, select Get New Part

from the Draw menu, and enter the symbol name.

• To rotate a symbol before placing it, press C+R.

• For V1 and Meter, place a generic voltage source using the

VSRC symbol. When you place the source for the meter,

change its name by double-clicking the symbol’s reference

designator and typing

Meter in the Edit Reference

Designator dialog box.

• For R1-R7, place a resistor using the R symbol.

ure 13-5

Pressure Sensor Circuit

or press C+G