Title :
Programmable analog VLSI CNN chip with local digital logic
Author :
Halonen, K. ; Porra, V. ; Roska, T. ; Chua, L.
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A new integrated circuit cellular neural network (CNN) implementation having digitally or continuously selectable template coefficients is presented. Local logic and memory are added into each cell providing a simple dual (analog and digital) computing structure. The variable-gain operational transconductance amplifiers (OTAs) are used as the voltage controlled current sources to program the template element values. This analog array processor can be applied to solve problems with a sequence of different templates. A 4-by-4 CNN circuit is realized using the 2-μm analog CMOS process. To test the circuit a general purpose control system was designed with the microcomputer interface
Keywords :
CMOS integrated circuits; VLSI; application specific integrated circuits; linear integrated circuits; neural nets; 2 micron; 4-by-4 CNN circuit; analog CMOS process; analog array processor; cellular neural network; continuously selectable template coefficients; dual computing structure; general purpose control system; local digital logic; local memory; microcomputer interface; programmable analogue VLSI CNN chip; variable-gain operational transconductance amplifiers; voltage controlled current sources; Analog computers; CMOS process; Cellular neural networks; Circuit testing; Digital integrated circuits; Logic; Operational amplifiers; Transconductance; Very large scale integration; Voltage control;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176606
