Voltage Controlled Current Source

In this topic:

Netlist Entry

Gxxxx nout+ nout- vc+ vc- [GAIN=]transconductance [GOUT=output_conductance]
nout+ Positive output node
nout- Negative output node
vc+ Positive control node
vc- Negative control node
transconductance Output current/Input voltage (Siemens or mhos)
output_conductance Conductance at output terminals. Default=0

GOUT has a default value of zero unless the PSPICEGMIN option is set in which case it has a default value of GMIN. GMIN is set using ".OPTIONS GMIN=value" and has a default value of 1e-12.

SPICE2 polynomial sources are also supported in order to maintain compatibility with commercially available libraries for IC's. (Most operational amplifier models for example use several polynomial sources). In general, however the arbitrary source is more flexible and easier to use.

The netlist format for a polynomial source is:

Gxxxx nout+ nout- POLY( num_inputs ) vc1+ vc1- vc2+ vc2- ...
+ polynomial_specification
vc1+ etc. Controlling nodes
num_inputs Number of controlling node pairs for source.
polynomial_specification See Polynomial Specification.

PSpice Syntax

SIMetrix accepts PSpice syntax for arbitrary sources using VALUE, TABLE, Q and F operators. See PSpice and Hspice Syntax for more details.

SIMetrix also accepts the PSpice LAPLACE and FREQ operators. See PSpice LAPLACE and FREQ compatibility