LTSpice:
Analog circuit simulation has been inseparable from analog IC design. SPICE simulators are the only way to check circuitry prior to integration onto a chip. Further, the SPICE simulation allows measurements of currents and voltages that are virtually impossible to do any other way. The success of these analog circuit simulators has made circuit simulation spread to board level circuit design. It is easier in many cases to simulate rather than breadboard, and the ability to analyze the circuit in the simulation for performance and problems speeds the design of well-understood, robust circuits.
There are currently approximately fifteen hundred Linear Technology products modeled in LTspice. The program is freely downloadable from the Linear Technology website and is a high-performance, general-purpose SPICE simulator. Included are demonstration files that allow you to watch step-load response, start-up and transient behavior on a cycle-by-cycle basis. Included with the SPICE is a full-featured schematic entry program for entering new circuits.
To Read & download Practice labs for LTspice : Click Here...
Proteus:
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Xilink:
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Matlab:
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