Voltage Controlled Resistor Verilog A
Voltage controlled oscillator module vco in out.
Voltage controlled resistor verilog a. Verilog files constants vams disciplines vams fbh hbt 2 2a va hicuml2v2p11 va mod amp va hicuml2v2p22 va log amp va 145 7 147 8 verilog files constants vams disciplines vams mux2to1 va mux4to1 va mux8to1 va dls nto1 va dls 1ton va andor4x2 va andor4x3 va andor4x4 va dmux2to4 va dmux3to8 va dmux4to16 va ha1b va. Floating vcrs can be placed between two passive or active components. Here we show how to make a voltage controlled oscillator. This is defined in verilog a using a branch contribution as follows.
I p n represents the current flowing from port p to port n and v p n represents the potential difference measured between nodes p and n. We present a verilog a implementation of a resistor model that uses only such sources yet can handle small and zero valued resistances. Verilog a may be used to create signal sources. A voltage controlled oscillator verilog a may be used to create signal sources.
I p n v p n resistance. In this example we define a simple resistor. Two types of fets are often used. The pll consists of a phase detector an amplifier and a voltage controlled oscillator.
Grounded vcrs the more common and les. A resistor is a device whose current is proportional to the voltage difference between its terminals. Vcrs are most often built with field effect transistors. Voltage controlled current source only verilog a resistor model for r 0.
Voltage controlled current source only verilog a resistor model for r o. A read is counted each time someone views a publication summary such as the title abstract and list of authors. There are both floating voltage controlled resistors and grounded floating resistors. Here we show how to make a voltage controlled oscillator.
The verilog a source code below demonstrates a pll circuit. A voltage controlled oscillator. The jfet and the mosfet. In this example a swept sine source is used to test the circuit.
The input port voltage controls the value of the resistor between the output ports. For compact model implementation purposes in simulators based on the modified nodal formulation it is more convenient to have models that are composed solely of voltage controlled current sources rather than having to conditionally include a current controlled voltage source or node collapse. The vco and phase detector are defined as.