In addition, the following three internal variables (predefined parameters) are available for use in expressions: A single parameter statement can include reference to one or more additional parameter statements. Parameters can be constants, expressions or a combination of the two. This statement defines the value of a parameter, allowing you to use a parameter name in place of numeric values for a circuit description. This can improve the readability of your circuit description.PARAM Support If you want to add comment text over multiple lines (creating trailing in-line comments), simply use the semicolon inline comment character to mark the beginning of each subsequent comment line:Īn in-line comment can be used to replace a standard comment line, which must start with the * character in the first column of the line. The following example shows a single in-line comment, where comment text is added to one line in the circuit description: Any text after this character (on the same line) is treated purely as a comment and therefore ignored by the Simulator, which moves on to the next line in the circuit description. This character - a semicolon - is treated as the end of a line in the circuit description. The PSpice in-line comment character is supported.

The following additional operators are supported: If x < than the smallest x value in the table, then the y value associated to that x value will be returned. If x than the largest x value in the table, then the y value associated to that x value will be returned. The following additional functions are supported: These changes include support for additional PSpice-based functions and operators, as well as the addition of global parameters. To facilitate compatibility with PSpice, changes have been made to the existing Spice syntax. Changes made to existing Spice3f5 devices in order to make them PSpice compatible.Changes made to existing Spice syntax to facilitate using expressions and global parameters to represent values in a PSpice-modeled circuit.The following sections provide summary information on: Altium Designer's Mixed-Signal Circuit Simulator has strong support for PSpice models.

The PSpice® simulation model format is the format of choice for many device manufacturers.

Altium designer spice model add library