CMOS analog programmable logic array

In this paper, we present a methodology to design analog circuits and program the circuits using a digital bit stream to function like a desired complex circuit (ex. OTAs). The basic CMOS analog cells are synthesized from high-level circuit specifications into transistor net-lists using a two phase tuning process. The first phase uses a fast analog performance estimator to perform a global circuit sizing and the second phase involves Spice circuit simulations for a detail circuit sizing achieving high accuracy results. The synthesis environment relies on a genetic algorithm based heuristic method to search for a solution in a large design space.