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

Volume

6

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

1542

Lastpage

1548

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;

fLanguage

English

Journal_Title

Neural Networks, IEEE Transactions on

Publisher

ieee

ISSN

1045-9227

Type

jour

DOI

10.1109/72.471382

Filename

471382