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3.2 Subcircuit and Device Model Definition 193
Scope
Parameters
Defaults
Translation
Symbolic
Variables
InitialGuess
InitialConditions
the scope of the model definition (local or global)
the list of model parameter names
default values for model parameters
translation rules for parameter conversion
the list of ABM parameters to be kept in symbolic form
the variables in a system of ABM equations
initial guess for the numerical values of ABM variables
initial conditions for dynamic ABM variables
Optional arguments of the Model command.
A valid Model definition has the following general form:
Model[
Name −> name,
Selector −> selector
Ports −> {port nodes},
optarg
−> value ,
Definition −> Netlist[ ] | Circuit[ ] | Equations[ ]
]
Arguments Description
The arguments of the Model command are explained in detail below.
Name
Name−>"string"
Name−>symbol
Name−>{"string
", "string
", † † † }
the name of the model class to which the model definition
is assigned
equivalent to Name−>ToString[symbol]
assign the model definition to several model classes
Format of the Name argument.
The value of the argument Name identifies a class of model definitions for a non-primitive circuit
object or a device type, such as current mirror, operational amplifier, bipolar junction transistor, or
MOSFET. The class name must be a symbol or a string. For example, the class names of BJT and
MOSFET models are defined in the Analog Insydes model library as: