FUBOCO: Structure Synthesis of Basic Op-Amps by FUnctional BlOck COmposition

This article presents a method to automatically synthesize the structure and initial sizing of an operational amplifier. It is positioned between approaches with fixed design plans small search space structures generic structural production rules large technically impractical structures. The presented approach develops hierarchical composition graph based on functional blocks that spans thousands meaningful variants for single-output, fully differential, complementary amplifiers. algorithm combined heuristic enumerative process. evaluation circuit library behavioral equations blocks. Formalizing knowledge in op-amps synthesis inherently reduces lessens number created topologies not fulfilling specifications. Experimental results three op-amp classes are presented. An outlook how this can be extended multi-stage given.