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Proceedings Paper

A novel CMOS digital pixel sensor for 1D barcode scanning
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Paper Abstract

A 1-D CMOS digital pixel image sensor system architecture is presented. Each pixel contains a photodiode, a low-power charge-sensitive amplifier, low noise sample/hold circuit, an 8-bit single-slope ADC, a 12-bit shift register and timing & control logic. The pixel is laid out on a 4µm pitch to enable a cost efficient implementation of high-resolution pixel arrays. Fixed pattern noise (FPN) is reduced by a charge-sensitive feedback amplifier, and the reset noise is cancelled by correlated double sampling read out. A prototype chip containing 512 pixels has been fabricated in the TSMC .25um logic process. A 40μV/e- conversion gain is measured with 100 e- rms read noise.

Paper Details

Date Published: 7 June 2004
PDF: 9 pages
Proc. SPIE 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V, (7 June 2004); doi: 10.1117/12.526736
Show Author Affiliations
Mei Yan, SUNY/Stony Brook (United States)
Gianluigi DeGeronimo, Brookhaven National Lab. (United States)
Paul O'Connor, Brookhaven National Lab. (United States)
Bradley S. Carlson, Symbol Technologies, Inc. (United States)


Published in SPIE Proceedings Vol. 5301:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V
Nitin Sampat; Morley M. Blouke; Ricardo J. Motta, Editor(s)

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