5Spice Analysis offers easy to use analog circuit simulation for the typical circuit designer. It provides Spice specific schematic entry, the ability to define and save an unlimited number of analyses, and integrated graphing of simulation results. Plus easy inclusion of Spice/PSpice subcircuits from a user expandable library. The focus is on analog circuit analysis and circuit design at the component level. Student level MOSFET IC design is also supported but not compatible with HSpice model libraries.

5Spice provides the analysis capabilities needed by experienced circuit designers while remaining easy to use - a big step up from student oriented Spice programs.

Features:
1. most Spice concepts are represented visually in the schematic
2. use a wizard to set Spice simulation defaults to match your circuit
3. define, name and save unlimited numbers of analyses, each with a corresponding graph
4. indexed library of Spice models and subcircuits
5. easily add manufacturer's files of models and subcircuits or your own. accepts standard Spice subcircuit syntax plus almost complete compatibility with PSpice subcircuit syntax as used by Analog Devices, Linear Technology and TI. Not compatible with PSpice digital models.
6. subcircuit schematic symbols auto-adjust number of pins
7. the opamp and generic subcircuit schematic symbols adjust the number of pins to match the number of nodes in the user selected subcircuit. users can enter names for the pins which are then saved in the library.
8. temperature or component values can be swept and results plotted in a single graph. an included opamp model allows opamp GBW to be swept.
9. no need to keep track of circuit node numbers when graphing
10. support for analysis of alternative designs
11. much of Spice's traditional quirkiness is hidden from the user
12. program's Help tells how to perform tasks, written by a Spice user
13. behavioral modeling
14. schematic symbol with user defined equation (equation may contain IF-THEN-ELSE structures, math functions, etc.)
15. a notes section in the schematic and one in each analysis allows users to document their work

Many PC board layout programs come with some sort of Spice simulator. To use the simulator, you often must replace the parts in your PC board schematic with parts from a separate library of simulation parts. And remove connectors, digital parts, etc. you don't want to model. And add parts to model component imperfections (resistance of inductors, etc.) plus special parts like Spice signal sources and so forth. Then run simulations using a user interface that was designed for easy PCB layout, not for simulation.

5Spice is totally aimed at Spice simulation, including its schematic features (see the White Paper for details). Since experienced circuit designers normally simulate only a small portion of a large circuit, it is often quicker to draw just that portion in 5Spice and start simulating. Plus it is much easier to document your simulation work in 5Spice.

Registering the program:
Allows larger schematic sizes, seeing results of Noise, Distortion, Sensitivity and FFT analyses, saving schematics with Logic gates, the parameter TestPoint or the Transformer with saturating core, passing parameters from the schematic to subcircuits, and exporting data.

The license of this software is Free Trial Software, the price is $199.00, you can free download and get a free trial.