zero.liso.base module

Base LISO parser

class zero.liso.base.LisoNoisyElement(component, suffix=None, index=None)

Bases: object

LISO noisy element

OPAMP_NOISE_TYPE_INV_CURRENT = 2

OPAMP_NOISE_TYPE_NON_INV_CURRENT = 1

OPAMP_NOISE_TYPE_VOLTAGE = 0

property has_opamp_inv_current_noise

property has_opamp_non_inv_current_noise

property has_opamp_voltage_noise

property has_suffix

Whether a noise type suffix has been defined for this noisy element.

class zero.liso.base.LisoOutputCurrent(component=None, **kwargs)

Bases: zero.liso.base.LisoOutputElement

LISO output current

OUTPUT_TYPE = 'current'

property component

The output current component

class zero.liso.base.LisoOutputElement(type_, element=None, scales=None, index=None)

Bases: object

LISO output element

OUTPUT_TYPE = None

SUPPORTED_SCALES = {'imaginary': {'imag': ['im', 'imag']}, 'magnitude': {'abs': ['abs'], 'db': ['db']}, 'phase': {'deg': ['deg', 'degrees', 'degrees (>0)', 'degrees (<0)', 'degrees (continuous)']}, 'real': {'real': ['re', 'real']}}

property has_imag

Whether the output has a imaginary scale

property has_magnitude

Whether the output has a magnitude scale

property has_phase

Whether the output has a phase scale

property has_real

Whether the output has a real scale

property imag_index

The index of the imaginary scale in the scale list

property imag_scales

property magnitude_index

The index of the magnitude scale in the scale list

property magnitude_scales

property n_scales

Number of scales

property phase_index

The index of the phase scale in the scale list

property phase_scales

property real_index

The index of the real scale in the scale list

property real_scales

property scales

class zero.liso.base.LisoOutputVoltage(node=None, **kwargs)

Bases: zero.liso.base.LisoOutputElement

LISO output voltage

OUTPUT_TYPE = 'voltage'

property node

The output voltage node

class zero.liso.base.LisoParser

Bases: object

Base LISO parser

add_noisy_element(noisy_element)

Add noise source.

This stores the specified noise source for use in building the solution.

Parameters

noisy_element (LisoNoiseSource) – The noise source to add.

Raises

ValueError – If the specified noise source is already present.

add_noisy_sum_element(noisy_sum_element)

Add noise sum source.

This stores the specified noise source for use in building the sum function in the solution.

Parameters

noisy_sum_element (LisoNoiseSource) – The noise source to add to sum.

Raises

ValueError – If the specified noise sum source is already present.

add_response_output(output)

Add response output.

This stores the specified sink for use in building the solution.

Parameters

sink (LisoOutputElement) – The sink to add.

Raises

ValueError – If the specified sink is already present.

build()

Build circuit if not yet built

default_response_sinks()

Default response sinks.

Returns

list of Component or Node

default_response_sources()

Default response sources

property displayed_noise_objects

Noise sources to be plotted

property frequencies

Analysis frequencies

property inductor_couplings

property input_impedance

Circuit input impedance

property input_node_n

Circuit negative input node

property input_node_p

Circuit positive input node

property input_refer

Whether noise is project to the input.

property input_type

Circuit input type

property n_displayed_noise

property n_response_outputs

property n_summed_noise

property noise_output_element

Node or component that noise sources in the circuit are projected to.

Note: this is a string.

property noisy_elements

property noisy_sum_elements

property opamp_names

Get set of op-amp component names in the circuit

property opamp_output_node_names

Get set of node names associated with outputs of opamps in the circuit

property output_components

The output components of the responses computed in the analysis

property output_nodes

The output nodes of the responses computed in the analysis

property output_type

Response output type

abstract p_error(p)

Child classes must implement error handler

parse(text=None, path=None)

Parse LISO file.

Parameters

• text (str, optional) – LISO text to parse.

• path (str, optional) – Path to LISO file to parse.

property parsing_started

property plottable

Whether the analysis will calculate something that can be plotted

reset()

Reset parser to default state.

property resistor_names

Get set of resistor component names in the circuit

property response_outputs

solution(force=False, set_default_plots=True, **kwargs)

Get the solution to the analysis defined in the parsed file.

Parameters

• force (bool) – Whether to force the solution to be recomputed if already generated.

• set_default_plots (bool) – Set the plots defined in the LISO file as defaults.

property summed_noise_objects

Noise sources included in the sum column

t_error(t)

property will_calc_component_responses

Whether the analysis will calculate responses to components

property will_calc_node_responses

Whether the analysis will calculate responses to nodes

property will_calc_noise

Whether the analysis will calculate noise

property will_calc_responses

Whether the analysis will calculate responses

exception zero.liso.base.LisoParserError(message, line=None, pos=None, **kwargs)

Bases: ValueError

LISO parser error