User Guide

Chapter 6 Analog behavioral modeling
174
PSpice-equivalent parts
PSpice-equivalent parts respond to a differential input
and have double-ended output. These parts reflect the
structure of PSpiceE and G devices, thus having two pins
for each controlling input and the output in the part.
Table 1
summarizes the PSpice-equivalent parts available
in the part library.
PSpice-equivalent ABM parts can be classified as either E
or G device types. The E part type provides a voltage
output, and the G device type provides a current output.
The device’s transfer function can contain any mixture of
voltages and currents as inputs. Hence, there is no longer
a division between voltage-controlled and
current-controlled parts. Rather the part type is dictated
only by the output requirements. If a voltage output is
required, use an E part type. If a current output is
necessary, use a G part type.
Table 1 PSpice-equivalent parts
Category Part Description Properties
Mathematical
expression
EVALUE general purpose EXPR
GVALUE
ESUM special purpose (none)
GSUM
EMULT
GMULT
Table look-up ETABLE general purpose EXPR
GTABLE TABLE
Frequency
table look-up
EFREQ general purpose EXPR
GFREQ TABLE
Laplace
transform
ELAPLACE general purpose EXPR
GLAPLACE XFORM
T
h
ere are no equiva
l
ent “F” or “H” part
types in the part library becayse PSpice “F”
and “H” devices do not support the ABM
extensions.
Pspug.book Page 174 Wednesday, November 11, 1998 1:14 PM