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Proceedings Paper

Digital CMOS active pixel image sensor for multimedia applications
Author(s): Zhimin Zhou; Bedabrata Pain; Jason C.S. Woo; Eric R. Fossum
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Paper Abstract

Two charge-scaling successive approximation A/D converters for on-focal-plane column-parallel data processing in CMOS active pixel image sensors (APS) are presented. The converters are designed in a thin but long fashion to fit a pitch size of 40 micrometers for 2.0 micrometers technology and 24 micrometers for 1.2 micrometers technology. Designed for multimedia and other commercial and industrial applications, each in column A/D converter achieves a 8 bit resolution and accuracy with a signal swing of 1 V. Maximum conversion rate exceeding 200 kHz enables high speed digital readout beyond 200 frames/sec for large format 1 K X 1 K CMOS image sensors. A prototype device of 64 X 64 APS image array with 8 bit digital output was demonstrated up to 1 kHz frame rate, and with column-wise non-uniformity less than 2 LSBs.

Paper Details

Date Published: 25 September 1996
PDF: 7 pages
Proc. SPIE 2894, Detectors, Focal Plane Arrays, and Applications, (25 September 1996); doi: 10.1117/12.252124
Show Author Affiliations
Zhimin Zhou, Univ. of California/Los Angeles (United States)
Bedabrata Pain, Jet Propulsion Lab. (United States)
Jason C.S. Woo, Univ. of California/Los Angeles (United States)
Eric R. Fossum, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 2894:
Detectors, Focal Plane Arrays, and Applications
William G. D. Frederick; Junhong Su; Marc Wigdor, Editor(s)

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