A direct and fully cancellation-free approach to the analysis of large analog circuits with decision diagrams

Among the methods for symbolic analysis of large analog circuit there are the methods based on the Determinant Decision Diagrams (DDD). In the classical approach, to use these methods in significant or dominant terms generation one needs to create the modified nodal admittance matrix and then to build the compact DDD. In the next step s-Expanded form should be derived and finally a symbolic cancelation should be made. The paper presents a new approach to this problem that allows us to omit intermediate steps in the process and to obtain the s- Expanded cancelation-free decision diagram, with vertices related to the (trans-)conductances, directly from the net list.