A Windows package for symbolic and numerical simulation of analog circuits

A Windows program package for both symbolic and numerical simulation of analog circuits is presented in this paper. It is provided with functionalities which permit the graphical schematic entry of the circuit, the symbolic analysis, the approximation of the symbolic results, the use of an external numerical simulator and the graphical postprocessing of both the symbolic and numerical simulation results. These functionalities can result very useful in the design of analog circuits, because they allow us to immediately evaluate the influence of both topology and component value changes on the circuit behavior.