Publication

Influence of Information Leakage in Analog Memory on Learning Kohonen Network on Silicon

2009
Conference Papers

Abstract

The paper presents an influence of leakage effect observed in capacitive analog memories on learning process in hardware implemented Kohonen neural networks with MOS transistors used as switches connected with information holding capacitors. The learning results, i.e. variations (adaptations) of weight values, strongly depend on the transistor leakage currents. This is a cause for some quantization error associated with the weight adaptations during the network training. The unwanted leakage influence can be minimized in several ways discussed in this paper. As expected, the observed leakage influence on the memory storage time rises with an increase of temperature. This has been verified by means of computer simulations (Matlab, HSpice) as well as measurements of a prototyped Kohonen network chip (0.18 mu m CMOS process).

Official source

https://infoscience.epfl.ch/entities/publication/7d41ee0c-7172-45f6-baf7-3cca403d39a2

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2009
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7d41ee0c-7172-45f6-baf7-3cca403d39a2

About this result

Related concepts (32)

MOSFET

The metal-oxide-semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of field-effect transistor (FET), most commonly fabricated by the controlled oxidation of silicon. It has an insulated gate, the voltage of which determines the conductivity of the device. This ability to change conductivity with the amount of applied voltage can be used for amplifying or switching electronic signals. A metal-insulator-semiconductor field-effect transistor (MISFET) is a term almost synonymous with MOSFET.

Transistor

A transistor is a semiconductor device used to amplify or switch electrical signals and power. It is one of the basic building blocks of modern electronics. It is composed of semiconductor material, usually with at least three terminals for connection to an electronic circuit. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal.

Leakage (electronics)

In electronics, leakage is the gradual transfer of electrical energy across a boundary normally viewed as insulating, such as the spontaneous discharge of a charged capacitor, magnetic coupling of a transformer with other components, or flow of current across a transistor in the "off" state or a reverse-polarized diode. Gradual loss of energy from a charged capacitor is primarily caused by electronic devices attached to the capacitors, such as transistors or diodes, which conduct a small amount of current even when they are turned off.

Related publications (12)

Influence of Information Leakage in Analog Memory on Learning Kohonen Network on Silicon

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