Modular current-mode multiple input minimum circuit for fuzzy logic controllers

A new current-mode multiple input minimum circuit designed with 4n+1 transistors for n inputs is proposed. This structure is regular and modular, so it can be easily expanded to meet the requirement of the number of multiple inputs. Besides, because the proposed multiple input minimum circuit has one-stage structure, not only the problem of accumulated errors is solved but also the operation speed is increased. Simulation results show that the circuit features high speed, high accuracy, and large dynamic range.