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What is SPICE?

What can you do with SPICE?

In the previous section we introduced SPICE as a simulator for analog electronic circuits. More specifically, it is a general-purpose circuit simulation program that provides linear AC analysis, non-linear transient analysis, and non-linear DC analysis.
Analysis is performed by solving cominations of theoretical and experimental (device model) equations representing the behavior of elements based on Kirkhoff's current and voltage laws, utilizing modified nodal point analysis.

Device Model
Analytical expression developed based on theoretical and experimental study
● The below elements and devices can be simulated
  • Passive components (i.e. resistors, capacitors, inductors)
  • Active devices (e.g. diodes, bipolar transistors, MOSFETs)
  • Transmission lines
  • Power sources
● The following analysis methods are possible.
  • Transient
  • DC
  • Small-signal AC
  • Noise

Until SPICE, IC design was carried out entirely by hand
However, the switch to electronic circuit design following the advent of computers, combined with an increase in the number of elements that can be incorporated into ICs (made possible due to advancements in production technology), laid the foundation for SPICE.
Incidentally, PSpice® from Cadence Design Systems is the first simulator that can be run on a PC, making the transition from requiring a mainframe.

Although initially designed as a simulator for electronic circuits, it has now become an essential tool for board design that transmits electrical signals and requires analog elements utilizing high-speed CPU operation.

  • Electronic Board Design (PSpice)
  • PCB Design/Validation (IBIS)
SPICE Models

Electronics
Fundamentals