zero.noise module

Electronic noise sources

class zero.noise.ComponentNoise(function=None, component=None)

Bases: zero.noise.Noise

Component noise source.

ELEMENT_TYPE = 'component'

property component_type

class zero.noise.CurrentNoise(**kwargs)

Bases: zero.noise.NodeNoise

Node current noise source.

NOISE_TYPE = 'current'

property label

abstract noise_current(frequencies, **kwargs)

class zero.noise.NodeNoise(node=None, **kwargs)

Bases: zero.noise.Noise

Node noise source.

Parameters

node (Node) – Node associated with the noise.

ELEMENT_TYPE = 'node'

class zero.noise.Noise(function=None, component=None)

Bases: zero.elements.BaseElement

Noise source.

Parameters

• function (callable) – Callable that returns the noise associated with a specified frequency vector.

• component (Component, optional) – Component associated with the noise. While optional, this must be set before the noise can be used in a calculation.

NOISE_TYPE = None

abstract property label

property noise_type

spectral_density(frequencies)

exception zero.noise.NoiseNotFoundError(noise_description, *args, **kwargs)

Bases: ValueError

class zero.noise.OpAmpCurrentNoise(**kwargs)

Bases: zero.noise.CurrentNoise

property corner_frequency

property flat_noise

noise_current(frequencies)

class zero.noise.OpAmpVoltageNoise(**kwargs)

Bases: zero.noise.VoltageNoise

property corner_frequency

property flat_noise

noise_voltage(frequencies)

class zero.noise.ResistorJohnsonNoise(**kwargs)

Bases: zero.noise.VoltageNoise

Resistor Johnson-Nyquist noise source.

NOISE_TYPE = 'johnson'

property label

noise_voltage(frequencies)

property resistance

class zero.noise.VoltageNoise(**kwargs)

Bases: zero.noise.ComponentNoise

Component voltage noise source.

NOISE_TYPE = 'voltage'

property label

abstract noise_voltage(frequencies, **kwargs)