forned automatically. This is the starting point for the symbolic analysis and approximation steps: Net lists containing symbolic parameters and associated numerical reference values (design point). With one of the three available circuit analysis procedure MNA, MLA, STA (Modified Nodal Analysis, Modified Loop Analysis, Sparse Tableau Analysis) the symbolic circuit equations are generated. A fully symbolic solution would lead to expressions containing several thousands of terms. Therefore, the symbolic circuit equations are simplified by means of equation-based approximation [3][4]. The following results for G are obtained for different maximum magnitude errors of the simplified vs. the original transfer function in the design point.