Title :
A CMOS analog circuit for Gaussian functions
Author :
Madrenas, J. ; Verleysen, M. ; Thissen, P. ; Voz, J.L.
Author_Institution :
Lab. de Microelectron., Univ. Catholique de Louvain, Belgium
fDate :
1/1/1996 12:00:00 AM
Abstract :
A simple CMOS analog circuit that performs the Gaussian function for classification applications is introduced. Combining the exponential characteristics of MOS transistors in weak inversion and the square characteristics in strong inversion the function is built. Design constraints and mismatch effects are discussed, as well as the layout optimization. The circuit has been designed in a SOI technology and manufactured. Good experimental results are obtained which shows that the circuit is suitable to be included as a building block of an IC to perform classification tasks or other possible applications
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; integrated circuit layout; silicon-on-insulator; CMOS analog circuit; Gaussian functions; MOS transistors; SOI technology; Si; classification applications; layout optimization; mismatch effects; strong inversion; weak inversion; Analog circuits; CMOS analog integrated circuits; CMOS technology; Constraint optimization; Design optimization; Input variables; MOSFETs; Resistors; Signal processing algorithms; Voltage;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
