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SPICE Circuit Simulation

S imulation P rogram with

I ntegrated C ircuit E mphasis

UCBerkeley SPICE Creators

• Don Pederson, Prof.
• Ron Rohrer, Prof.
• Bob Berry
• Shi-Ping Fan
• Frank Jenkins
  • Larry Nagel, Group Leader
  • Jesse Pipkin
  • Steve Ratner
  • Lynn Weber Prof. Donald O. Pederson (September 30, 1925 - December 25, 2004) of UC Berkeley was apioneering visionary in solid-state circuit design. He was the originator and, with his students, was the driving force behind the SPICE circuit simulation program, which has become theubiquitous simulation program for detailed digital, memory, and analog circuit design at the transistor level throughout the industry, a position it has continued to maintain for over twodecades to the present time. SPICE was released into the public domain, and quite literally spawned the EDA industry. His impact on the electronics industry was recognized most notablyby the IEEE in 1998, when he was named the recipient of the IEEE Medal of Honor. He became a member of the National Academy of Engineering in 1974 and the National Academy ofSciences in 1982, as well as receiving many other awards.

Origins of SPICE

• SPICE began as an innovative class project under the direction of Ron Rohrer in the academic year 1969-
• The class topic was circuit synthesis but became a class on circuit simulation - Students learned by doing --- They wrote a simulator!
• The final judge of success was Don Pederson
  • Larry Nagel was Liaison to Prof. Pederson

Why SPICE Was Successful

• FREE and in the Public Domain
• DC, AC, Transient, Noise, and SensitivityAnalyses in the same program
• Built-in models for diodes, bipolar transistors, MOSFETs, and JFETs
• Heavy use of SPICE by students led to many improvements in robustness - At the time, could handle fairly large circuits
• Written in fairly portable FORTRAN

Industrial Use of SPICE

• Many industrial research centers adopted SPICE and developed proprietary versions of the program, including - Bell Labs (ADVICE), Texas Instruments (TISPICE), Motorola (MCSPICE)
• Shawn and Kim Hailey formed Meta Software (Campbell, CA) and modified a copy of SPICE 2E into the most successful version of a commercial SPICE known as HSPICE

SPICE

• In 1989, SPICE3 was released into the public Domain
• This later version of SPICE3 was coded in the C language and utilized the more sophisticated data structures of C
• SPICE3 contains about 135,000 lines of C code
• The latest version, 3F5, was released in 1993

UCBerkeley SPICE SpinOffs

• Pspice  now owned by Cadence
• Hspice  now owned by Synopsis
• LTspice  by Linear Technology
• TINA-TI  by DesignSoft, Texas Instruments
• SIMetrix  SIMetrix Technologies
• MultiSim  by National Instruments
• Xyce  Parallel Electronic Simulator by Sandia National Labs

More on SPICE from Inventor

• For More Info from someone who really Knows (Dr. Laurence Nagel) see: - http://www.omega- enterprises.net/The%20Origins%20of%20SPICE.ht ml

Laurence W. Nagel Ronald A. Rohrer Donald O. Pederson

• DownLoad PSPICE 9.
• Install PSPICE 9.
• Install PSPICE 9.
• Release Notes PSPICE 9.

Sucessful Launch of PSPICE

• Now Follow First Example in PSPICE StudyGuide

SPICE Simulation GamePlan