Simulation Program with Integrated Circuit Emphasis model also know as SPICE, SPICE is a powerful general purpose analog circuit simulator. The SPICE model is now widely used in electronic circuit design and has two major versions: HSPICE and PSPICE.
HSPICE is mainly used in integrated circuit design, while PSPICE is mainly used in PCB board and system level design.
The SPICE model consists of two parts: model equations and model parameters.
Since the model equations are provided, the SPICE model can be closely coupled with the simulator’s algorithm to achieve better analysis efficiency and analysis results.
Using the SPICE model for Signal Integrity analysis at the PCB level requires integrated circuit designers and manufacturers to provide detailed and accurate descriptions of the SPICE model and semiconductor characteristics of the integrated circuit unit sub-circuit.
Since this information is usually intellectual property and confidentiality of designers and manufacturers, only a small number of semiconductor manufacturers will provide the corresponding SPICE model while providing chip products.
The accuracy of the SPICE model analysis depends mainly on the source of the model parameters, ie the accuracy of the data, and the scope of application of the model equations.
Model equations combined with various digital simulators may also affect the analysis.
Precision. In addition, the PCB board model SPICE model simulation calculation is large, and the analysis is time consuming.
