Implementation of a CMOS mixed-signal digital FLC chip using new fuzzifier and current mode A/D

In this paper we design a new Fuzzy Logic controller (FLC) chip with mixed-signal input and digital output. For implementing this idea, a new programmable Fuzzifier circuit based on generation of three current membership functions including Gaussian, Trapezoidal and Triangular shapes and three new circuits for implementing Min operators are proposed. We improved a Multiplier/Divider circuit and a current mode Analog to Digital (A/D) converter with 7 bit resolutions to complete and implement Defuzzifier block. The proposed controller was designed less than 0.1 mm² in 0.35 um CMOS standard technology. The inference speed and Power consumption of the controller are about 16.6 MFLIPS and 13.4 mw respectively.