Why IsSpice4 is Better !!

IsSpice4 - State Of The Art SPICE

IsSpice4 provides a quantum leap in performance over other analog and mixed mode simulators. It is the first commercially available version of SPICE based on Berkeley SPICE 3F and Georgia Institute of Technology’s XSPICE. IsSpice4 allows you to explore circuit performance by interactively running different analyses and sweeping any circuit variable. With the ability to simulate electrical, sampled-data, mechanical, physical, thermal, and other systems, IsSpice4 is the ONLY true native mixed mode SPICE 3 based simulator. The advanced features of IsSpice4 allow all types of applications to be simulated: switch mode power supplies, mixed signal ASICs, RF communication systems, interconnects, control systems, and mixed mechanical/physical systems. Intusoft has spent hundreds of man-hours improving SPICE. And although IsSpice4 is based on SPICE 3, Intusoft has greatly enhanced the program over and above the public domain version; adding an interactive interface, providing superior analysis and model support, and improving the convergence algorithms - all for a price no one can match. IsSpice4 is simply the best and most affordable SPICE program on the market today. Just take a look at some of its features:

State-of-the-Art Operation

Native mixed mode simulation - IsSpice4 includes an event driven simulator that supports mixed analog, digital and DSP circuits
Interactive Operation - IsSpice4 operates interactively, and frees you from the restrictive batch style of older SPICE simulators
Interactive Command Language - Comprehensive set of functions for batch style control of the simulator
NEW Visual Basic Scripting - Drive IsSpice4 using VB scripts from popular programs like Excel
NEW OLE Interface - Develop your own OLE/ActiveX interfaces

Built-in Models

Elements: Resistors, Capacitors, Inductors, Coupled Inductors, Transmission Lines, Diodes, BJTs, JFETs, MOSFETs (Level 1-8), GaAs Mesfets, Switches, and Boolean logic expressions
Digital and AHDL Models: Digital primitives, State Machine, Frequency Divider, RAM, Sampled-Data Filters, Nonlinear VCOs, Laplace Equations
Behavioral Modeling: In-line Equations, Table models, If-Then-Else

Advanced Models

HDL Models and C Subroutines; Create models based on a powerful nonproprietary HDL using C
Support for nonelectrical applications and top-down system design
Three types of digital/mixed mode modeling
Lossy (distributed) transmission lines with frequency dependent losses
MOS: BSIM1, BSIM2, BSIM3 version 2 and 3.1 and SOI MOSFET models
MESFET: Statz, Curtis-Enttenburg, Parker-Skellern, and HEMT models

Analysis Support

AC, DC, transient, noise, Fourier, distortion, DC/AC sensitivity, Pole-Zero analyses, and Temperature variations on individual elements
Monte Carlo Analysis, Circuit Optimization/Performance Analysis
New Design Validator automatic design verification for
New Test Designer Fault Analysis and Software Test Set Design

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Additional Interactive, AHDL & Mixed Mode Features

Real-time Display of voltages, currents and power dissipation
Simulation Scripts: a robust scripting language that allows simulation breakpoints and loops of different analyses to be run as a test procedure
Interactively run analyses without having to edit the netlist or restart the simulator, add, delete, or rescale waveforms on the real-time display
Digital Simulation: IsSpice4 includes a 12 state digital logic simulator and models with timing information
Sweep parameters one at a time or in groups with great ease
Start, stop, pause, change, or resume any analysis on demand
Use C code subroutines & AHDL models based on XSPICE

Convergence and Speed Improvements

Automatic Gmin stepping/Source stepping algorithms
New Pseudo-Transient algorithm
Improved Predictor-Corrector, Latency, and Bypass algorithms
Improved program defaults
Special Circuit Debugging Options
Full Gear Integration option

Compatibility

True OLE Integration with popular schematic entry programs
PSpice(registered trademark of OrCAD) parameter passing syntax compatibility

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Did You Know Intusoft Was the First?

The following is a list of capabilities that Intusoft introduced to the analog simulation world.

SPICE 2 Models for: IGBTs, fuses, lasers, vacuum tubes, generic template models, dual gate Mosfets, SC filters, neural networks, digital gates, RF beads, IBIS buffers, saturable cores, and PWMs (using the state space approach)
Products/Features: Monte Carlo analysis for PC-based SPICE, integrated schematic entry dedicated to SPICE, SPICE 2 compatible model generation software, 32-bit version of SPICE for DOS, support for all Macintosh platforms, parameter passing

A SPICE For Everyone!

Affordability is the hallmark of Intusoft products. With our powerful ICAP/4Rx, ICAP/4Windows, and ICAP/4Macintosh software, all affordably priced, there’s an IsSpice that’s just right for you.

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The Biggest And Best Spice Libraries

What vendor has the most model types? What vendor has published 3 books on SPICE and modeling? What vendor has the only Windows based AHDL language? What vendor provides their own SPICE training? What vendor has the most behavioral modeling features?

No Contest - The only answer is Intusoft!

No SPICE Vendor can match the variety and quality of Intusoft.

Total Library Size Now Over 13,000 parts, hundreds of model types
User Defined C Code Models for analog, digital, array, and sampled-data elements
AHDL Models using a Windows C based language
Power Library (500+ models from Unitrode, Cherry, Linear Tech, Siliconix)
RF Device Library (600+ models from H-P, NEC, Philips, Motorola)
Vendor supplied IC/Op-Amp Models (1600+ models from Analog Devices, TI, APEX, etc.)

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