Sspice is a Symbolic SPICE circuit analyzer and approximator. Input files are in the SPICE format and the program performs a symbolic AC analysis Symbolic determinants are sorted with the additional option of numeric evaluation and even symbolic approximation. Besides accepting many of the standard SPICE definitions, Sspice also offers a variety of low and high frequency symbolic transistor models as well as some linear ICs. Menu options are available for evaluating 2nd order active RC circuits. These include identifying and solving filter formulas and approximating pole shift due to finite op-amp gain-bandwidth-product
