.. include:: /project-links.txt
.. include:: /abbreviation.txt



.. getthecode:: internal-device-parameters.py
    :language: python3
    :hidden:

============================
 Internal Device Parameters
============================
This example show how to access internal device parameters.

.. code-block:: py3

    
    
    import PySpice.Logging.Logging as Logging
    logger = Logging.setup_logging()
    
    
    from PySpice.Doc.ExampleTools import find_libraries
    from PySpice.Probe.Plot import plot
    from PySpice.Spice.Library import SpiceLibrary
    from PySpice.Spice.Netlist import Circuit, SubCircuit, SubCircuitFactory
    from PySpice.Unit import *
    
    
    class Level2(SubCircuitFactory):
        __name__ = 'level2'
        __nodes__ = ('d4', 'g4', 'v4')
        def __init__(self):
            super().__init__()
            self.M(1, 'd4', 'g4', 'v4', 'v4', model='nmos', w=1e-5, l=3.5e-7)
    
    class Level1(SubCircuitFactory):
        __name__ = 'level1'
        __nodes__ = ('d3', 'g3', 'v3')
        def __init__(self):
            super().__init__()
            self.X('mos2', 'level2', 'd3', 'g3', 'v3')
            self.subcircuit(Level2())
    
    circuit = Circuit('Transistor output characteristics')
    circuit.V('dd', 'd1', circuit.gnd, 2)
    circuit.V('ss', 'vsss', circuit.gnd, 0)
    circuit.V('sig', 'g1', 'vsss', 0)
    circuit.X('mos1', 'level1', 'd1', 'g1', 'vsss')
    
    if True:
        circuit.subcircuit(Level1())
    else:
        subcircuit_level2 = SubCircuit('level2', 'd4', 'g4', 'v4')
        subcircuit_level2.M(1, 'd4', 'g4', 'v4', 'v4', model='nmos', w=1e-5, l=3.5e-7)
    
        subcircuit_level1 = SubCircuit('level1', 'd3', 'g3', 'v3')
        subcircuit_level1.X('mos2', 'level2', 'd3', 'g3', 'v3')
        subcircuit_level1.subcircuit(subcircuit_level2)
    
        circuit.subcircuit(subcircuit_level1)
    
    print(str(circuit))
    
    
    simulator = circuit.simulator(temperature=25, nominal_temperature=25)
    analysis = simulator.dc(Vdd=slice(0, 5, .1)) # Fixme: ,Vsig=slice(1, 5, 1)