Title :
High speed and high resolution WTA circuit
Author :
Vlassis, S. ; Siskos, S.
Author_Institution :
Dept. of Electron. Lab., Aristotelian Univ. of Thessaloniki, Greece
Abstract :
The winner-takes-all (WTA) circuits are very common elements in the VLSI implementation of neural networks, fuzzy systems and nonlinear filters. In this paper a high speed and high resolution multiple input analogue WTA circuit is introduced. The circuit combines a current maximum selector with high-speed current comparators. A feedback circuit was used to correct the `corner´ error at the transition regions of the maximum selector. The circuit offers 56 nA resolution for 50 inputs with less than 38 ns delay. Simulation results, using 1.2 μm AMS CMOS process parameters, demonstrate the feasibility of the circuit
Keywords :
CMOS analogue integrated circuits; VLSI; analogue processing circuits; circuit feedback; current comparators; fuzzy systems; high-speed integrated circuits; neural chips; nonlinear filters; 1.2 micron; 38 ns; AMS CMOS process; VLSI implementation; corner error correction; current maximum selector; feedback circuit; fuzzy systems; high resolution WTA circuit; high speed WTA circuit; high-speed current comparators; multiple input analogue WTA circuit; neural networks; nonlinear filters; winner-takes-all circuits; Electronic mail; Error correction; Feedback circuits; Fuzzy systems; Laboratories; Logic; Neural networks; Nonlinear filters; Physics; Voltage;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780672
