User`s guide

Usin
g
Parts That You Can Simulate 3
-7
Usin
g
Parts That You
Can Simulate
The MicroSim libraries supply numerous parts designed for
simulation. These include:
• vendor-supplied parts
• passive parts
• breakout parts
• behavioral parts
At minimum, a part that you can simulate has these properties:
• A simulation model to describe the part’s electrical
behavior; the model can be:
• explicitly defined in a model library,
• built into PSpice A/D, or
• built into the symbol (for some kinds of analog
behavioral parts).
• A symbol with modeled pins to form electrical connections
on your schematic.
• A translation from schematic symbol to netlist statement so
that PSpice A/D can read it in.
Note
Not all parts in the libraries are set up for
simulation. For example, connectors are parts
destined for board layout only and do not have
these simulation properties.
The MicroSim libraries also
include special symbols that you
can use for simulation only.
These include:
•
stimulus s
y
mbols
to
g
enerate input si
g
nals to the
circuit (see
Defining Stimuli
on page 3-23)
•
g
round s
y
mbols
required
by all analo
g
and mixed-
si
g
nal circuits, which need
reference to
g
round
•
simulation control
s
y
mbols
to do thin
g
s like set
bias values (see
Appendix A, Setting Initial
State)
•
output control s
y
mbols
to do thin
g
s like
g
enerate
tables and line-printer plots to
the PSpice output file (see
Chapter 19,Other Output
Options)