User`s guide

14 Creatin

and Editin

Models

Anal

zin

the effect of model parameters on

device characteristics

You can also edit model parameters directly and investigate how

changing their values affects a device characteristic. As you

change model parameters, the Parts utility recalculates the

behavior of the part characteristics and displays a new curve for

each of the affected ones.

How to Fit Models

For a given model, the Parts utility displays a window with a list

of the device characteristics and a list of all model parameters.

You can also view performance curves (see Figure 4-3).

ure 4-3

Parts Utility Window with Data for a Bipolar

Transistor

For more information about the

properties of devices supported

by the Parts utility, refer to the

online

MicroSim PSpice A/D

eference Manual.