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Proceedings Paper

A high-speed high-sensitivity 1/2-inch 1M-pixel frame-transfer CCD imager for medical and industrial applications
Author(s): Adriana Stravers-Cimpoiasu; Holger Stoldt; Wilco Klaassens; Raymond Frost; Jan T. Bosiers
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Paper Abstract

A 1/2 inch 1M-pixel monochrome Frame-Transfer CCD imager with 5.6μm by 5.6μm pixel size was developed for use in medical and industrial applications. The sensor production uses 17 mask steps designed for an improved process, with highly transparent membrane poly-silicon gates and two metal layers. The first metal layer is used for vertical strapping to reduce the RC- times of the imaging electrodes. The image pixels, the storage cells and the readout register are made using two layers of membrane poly-silicon. An n-channel implant on a profiled p-well in a n-substrate achieves 52,000 electrons full well charge storage capacity in combination with excellent vertical anti-blooming and fast electronic shuttering. Smear as low as 0.06% at 1/30 sec integration time is achieved at 5MHz frame shift frequency. The pixel charge is converted to an output voltage using a 3-stage source follower amplifier, optimized for 40MHz pixel frequency. For use in high-speed industrial applications, the split read-out allows pixel rates up to 80MHz. The output amplifier with a conversion gain of 18.7μV/electron has an rms noise of 18 electrons at full bandwidth (linear dynamic range of 67.8 dB). The dark current level is 100 pA/cm2 at 60° C.

Paper Details

Date Published: 7 March 2005
PDF: 8 pages
Proc. SPIE 5677, Sensors and Camera Systems for Scientific and Industrial Applications VI, (7 March 2005); doi: 10.1117/12.585773
Show Author Affiliations
Adriana Stravers-Cimpoiasu, DALSA Professional Imaging (Netherlands)
Holger Stoldt, DALSA Professional Imaging (Netherlands)
Wilco Klaassens, DALSA Professional Imaging (Netherlands)
Raymond Frost, DALSA Semiconductors (Canada)
Jan T. Bosiers, DALSA Professional Imaging (Netherlands)

Published in SPIE Proceedings Vol. 5677:
Sensors and Camera Systems for Scientific and Industrial Applications VI
Morley M. Blouke, Editor(s)

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