Independent Sources

Dependent Sources

Behavioral Modeling

Compiled Macro Models

Mixed A/D

DR. SPICE includes the XSPICE code model technology which was developed at the Georgia Institute of Technology. This simulation and modeling technology extends the ability of DR. SPICE to model a circuit’s functionality at a high level of abstraction. There are 3 categories of code models: analog, digital and mixed analog/digital. The XSPICE technology includes a 12 state digital simulator embedded within DR. SPICE. Another feature of the XSPICE technology allows the user to develop models in the “C” programming language. These user-developed models are dynamically linked into DR. SPICE during a simulation.

By using a code model in your design, the user is gaining a potentially large (1000X) increase in simulation speed. The draw-back is that simulation accuracy is reduced. By having a well thought out Simulation methodology, the reduction in simulation accuracy can be negligible.

Back to the top

Statements

Components and Models

These devices and models provide parameters that may be altered.

 Back to the top

Models By Model Type

DR. SPICE provides over 5600 analog model descriptions in libraries that you can use in both analog schematic capture and simulation. On the PC, these libraries reside under the DR. SPICE installation directory:

c:\drspice\lib

The DR. SPICE models are cataloged into the following libraries:

How To Use The Model Descriptions

Each simulation model has its own unique symbol for use by a schematic capture package. To pull in the models for simulation simply set the DRSPICELIB environment variable (see Library ). To pull in the symbols for schematic capture, modify the library search path.

Models By Manufacturer

The DR. SPICE libraries include model from the following semiconductor manufactures:

Return To Main Help Menu

Back to the top