## Dynamic Nonlinear Voltage-Controlled Current/Voltage Source: DYN_VCCS

### Summary

DYN_VCCS is a nonlinear voltage-controlled current or voltage source (VCVS) whose number of nodes and parameters are dynamic depending on the parameter EQN.

### Parameters

Name Description Unit Type Default
ID Device ID   VC1
TNOM Parameter extraction temperature DegC 27
TEMP Device temperature DegC 27
MULT Number of devices in parallel   1
TC1 Linear temperature coefficient   0
TC2 Quadratic temperature coefficient   0
TYPE Current or Voltage source mode operation   current source or voltage source
EQN Current equation   A0+A1*V0+A2*V1

### Parameter Details

EQN. This is the current equation. The number of nodes is determined by the voltage variables V0, V1, etc. that are present in the equation. The number of coefficients is based on any other variables that are present in the equation.

For example, the equation A0 + A1*V0 + B0*V1 creates a four-node source due to the voltage variables V0 and V1. Three dynamic parameters are created: A0, A1, and B0.

You can use the following math functions in expressions for this parameter:

`sin`, `cos`, `tan`, `asin`, `acos`, `atan`, `sinh`, `cosh`, `tanh`, `abs`, `min`, `max`, `exp`, `log`, `log10`, `arcsin`, `arccos`, `arctan`, `pow`, `sqrt`, `sqr`

Functions `min`, `max`, and `pow` take two arguments; all others take one. `sqr` and `sqrt` are both square-root functions.

TYPE.The current or voltage source mode operation. Choose current source or voltage source from the drop-down list to specify the mode.

### Dynamic Parameters

Name Description Unit Type Default
A0 Coefficient   0
A1 Coefficient   0
A2 Coefficient   0

### Dynamic Parameter Details

The parameters A0, A1, and A2 are the default dynamic parameters. Any variables in the equation string of the EQN parameter are considered dynamic parameters with the exception of the variables Vx where x is any integer that is greater than or equal to zero.

### Implementation Details

The current equation is defined by the EQN parameter.

### Layout

This element does not have an assigned layout cell. You can assign artwork cells to any element. See “Assigning Artwork Cells to Layout of Schematic Elements” for details.