Title :
Switched-capacitor neuromorphs with wide-range variable dynamics
Author :
Elias, John G. ; Northmore, David P M
Author_Institution :
Dept. of Electr. Eng., Delaware Univ., Newark, DE, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
The use of switched capacitors as wide-range, programmable resistive elements in spatially extensive artificial dendritic trees (ADT´s) is described. We show that silicon neuro-morphs with ADT´s can produce impulse responses that last millions of times longer than the initiating impulse and that dynamical responses are tunable in both shape and duration over a wide range. The switched-capacitor resistors forming a dendritic tree are shown indirectly to have a useful programmable resistance range between 500 KΩ and 1000 GΩ. Experimental results are presented that show variable impulse response functions, tunable frequency selectivity, and rate-invariance of spatiotemporal pattern responses
Keywords :
CMOS analogue integrated circuits; VLSI; dynamics; neural chips; switched capacitor networks; transient analysis; transient response; trees (mathematics); 500 kohm to 1000 Gohm; CMOS double-poly n-well process; VLSI; artificial dendritic trees; dynamics; impulse response; neural networks; programmable resistance; programmable resistive elements; rate-invariance; spatiotemporal pattern responses; switched-capacitor neuromorphs; switched-capacitor resistors; tunable frequency selectivity; Biomembranes; Capacitors; Frequency; Resistors; Shape; Silicon; Spatiotemporal phenomena; Tunable circuits and devices; Very large scale integration; Voltage;
Journal_Title :
Neural Networks, IEEE Transactions on
