Title :
Wide-range variable dynamics using switched capacitor neuromorphs
Author :
Elias, John G. ; Northmore, David P M ; Meshreki, Samer M.
Author_Institution :
Delaware Univ., Newark, DE, USA
fDate :
30 May-2 Jun 1994
Abstract :
The use of switched capacitors as wide-range programmable resistive elements in spatially extensive artificial dendritic trees is described. We show that silicon neuromorphs with artificial dendritic trees can produce impulse responses that last nine orders of magnitude longer than the initiating impulse and that the responses are tunable in both shape and duration over five orders of magnitude. The dendritic tree switched capacitor resistors are shown indirectly to have a useful programmable resistance range between 500 kΩ and 1000 GΩ. Experimental results are presented that demonstrate impulse response tuning and rate-invariant neuromorph behavior from widely different spatiotemporal input patterns
Keywords :
MOS analogue integrated circuits; VLSI; analogue processing circuits; circuit tuning; electric resistance; neural chips; resistors; switched capacitor networks; transient response; 500 kohm to 1000 Gohm; MOS VLSI implementation; Si neuromorphs; artificial dendritic trees; impulse responses; programmable resistive elements; rate-invariant neuromorph behavior; spatiotemporal input patterns; switched capacitor neuromorphs; tunable duration; tunable shape; wide-range variable dynamics; Biomembranes; Capacitors; Circuit optimization; Delay; Resistors; Shape; Silicon; Tunable circuits and devices; Very large scale integration; Voltage;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409623
