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288 3. Reference Manual
have to be accessible symbolically. When setting up equations for noise analysis, specify the option
settings AnalysisMode −> AC and DefaultSelector −> "Noise" for CircuitEquations in order
to use the noise models. See CircuitEquations (Section 3.5.1) for a description of the options
DefaultSelector and ElementValues.
Note that the noise sources are expressed in the following units:
source type unit example: thermal noise
CurrentSource A Hz Sqrt[4 k T / R]
VoltageSource V Hz Sqrt[4 k T R]
Units of noise sources.
While specifying the value of a noise source it is also assumed that the bandwidth is Hz.
NoiseAnalysis has the following options:
option name
default value
DesignPoint Automatic specifies a list of numerical reference values
for symbolic element values in a set of
circuit equations
FrequencyVariable Automatic specifies the symbol that denotes the
complex Laplace frequency
InterpolationOrder 1 specifies the interpolation order of the
resulting interpolating functions
PointsPerDecade 10 specifies the number of sampling points per
frequency decade
Protocol
Inherited[AnalogInsydes]
standard Analog Insydes protocol
specification (see Section 3.14.5)
SweepPath (2. Pi I #1 &) specifies a mapping from a frequency to a
point in the complex plane
Options for NoiseAnalysis
See also: BodePlot (Section 3.9.1), ACAnalysis (Section 3.7.3), GetVariables (Section 3.6.7),
GetParameters (Section 3.6.9), Section 3.7.1.