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282 3. Reference Manual
3.7 Numerical Analyses
This chapter describes the standard numerical analyses types you can perform with most numerical
circuit simulators. The following table shows the supported analyses and their corresponding Analog
Insydes functions:
ACAnalysis (Section 3.7.3)
NoiseAnalysis (Section 3.7.4)
NDAESolve (Section 3.7.5)
NDAESolve (Section 3.7.5)
NDAESolve (Section 3.7.5)
small-signal (AC) analysis
noise analysis
operating-point (DC) analysis
DC-transfer (DT) analysis
large-signal (transient) analysis
Section 3.7.1 starts with an introduction of the Analog Insydes numerical data format, which all of
the above mentioned functions rely on. Section 3.7.2 describes the format which is used in Analog
Insydes to perform parameter sweeps.
3.7.1 Analog Insydes Numerical Data Format
This section introduces the simulation data format used in Analog Insydes. Some functions like
ACAnalysis (Section 3.7.3), NoiseAnalysis (Section 3.7.4), NDAESolve (Section 3.7.5), or
ReadSimulationData (Section 3.10.3) need to return numerical data which represents zero, one, or
multi-dimensional numerical data. This data will be returned in the following form:
{{l 1 −> v 1 , l 2 −> v 2 , ,
SweepParameters −> {p 1 −> s 1 , p 2 −> s 2 , }}, }
The variable labels l and the parameter labels p can be of type String or Symbol. For operating-point
data the value v i is a single numerical value, for sweep data it is an InterpolatingFunction. The
parameter value s i is always a single numerical value.
SweepParameters denotes the parameters which have been swept. It can be omitted if only one
data set is present.
3.7.2 Parameter Sweeps
A few Analog Insydes functions make use of parameter sweeping: Besides the integration variable,
NDAESolve (Section 3.7.5) allows for varying several parameters performing a multi-dimensional
parameter sweep. For preparation of the nonlinear simplification methods the range of the input
variables has to be specified as a parameter sweep using the command
NonlinearSetup (Section 3.12.1).