Adaptation of Current Signals with Floating-Gate Circuits

Authors:
Alberto Pesavento;Christof Koch;Timothy Horiuchi;Chris Diorio
Affiliations:
-;-;-;-
Venue:
MICRONEURO '99 Proceedings of the 7th International Conference on Microelectronics for Neural, Fuzzy and Bio-Inspired Systems
Year:
1999

Citing 6
Cited 1

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An Analog Floating-gate Memory in a Standard Digital Technology

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Experiments in very large-scale analog computation

CMOS imager non-uniformity correction using floating-gate adaptation

CMOS imagers

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Abstract

In this paper we present a new, adaptive spatial-derivative circuit for use in CMOS image sensors. The circuit removes its offset as a natural part of its operation using a combination of electron tunneling and hot-electron injection to add or remove charge on a floating-gate of an auto-zeroing amplifier. We designed, fabricated and successfully tested a chip with the circuit. Test results show that the circuit reduces the offsets by more than an order of magnitude.