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| IMAGING PRODUCTS AT76C401 DUAL MODE CMOS INTEGRATED COLOR IMAGER An integrated CMOS imaging solution for low-cost digital cameras, image capture elements on mobile phones and Webenabled appliances q q q q q q Integrated image sensor, CCD quality on low-cost CMOS Ideal for low-cost digital cameras, image capture elements on mobile phones and Web-enabled appliances 1281 x 480 pixel array Active pixel structure, random pixel addressing RGB standard output, dual resolution readout, low sensitivity to signal timing Non-destructive read, integrated readout control q q q q q q Color balance, fixed pattern noise removal via correlated double sampling (CDS) Glueless microprocessor interface Integral ADC, no analog I/O required Single 3.3V voltage rail, flexible power control Low interconnect wiring costs Easy handling; standard CMOS precautions for Electro-static discharge (ESD) and soldering R Image: Postscriptum/Cadrage AT76C401 SINGLE-CHIP CMOS IMAGING SOLUTION Imaging Products Marketing USA Tel : (+1)(408) 451-4884 Fax : (+1)(408) 451-4804 France Tel : (+33)(0)4 42 53 60 00 Fax : (+33)(0)4 42 53 60 01 United Kingdom Tel : (+44)(0) 1276 686 677 Fax : (+44)(0) 1276 686 697 Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 USA Tel : (+1)(408) 436 4228 / 487 2610 Fax : (+1)(408) 436 4300 Europe Atmel U.K. Ltd Coliseum Business Centre Riverside Way, Camberley Surrey GU15 3YL, England Tel : (+44)(0)(1276) 68 66 77 Fax : (+44)(0)(1276) 68 66 97 Asia Atmel Asia Ltd Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East, Kowloon Hong Kong Tel : (+852) 272 19 778 Fax : (+852) 272 21 369 Japan Atmel Japan KK Tonetsu Shinkawa Bldg, 9F 1-24-8 Shinkawa Chuo-Ku, Tokyo 104-0033 Japan Tel : (+81) 3 3523 3551 Fax : (+81) 3 3523 7581 E-mail literature@atmel.com Web Site http://www.atmel.com The Atmel AT76C401 CMOS imager is a single-chip solution jointly developed with Polaroid Corporation. The device combines Atmel's design expertise with Polaroid's patented technology for pixel sensing, color filter processing and color recovery signal processing. It integrates all functions to capture and digitize color images and is suitable for a variety of imaging applications, including digital cameras, for the general market. code r mn D e Colu Column Address Image Sensor Array CDS Bloc k Image sensor Bias Generator Blue Green Red Analog Bias Generator Bias Row Address Row Decoder Data Bus Address Bus Control Bus Analog Gain and Offset Image Sensor Logic Global Analog Gain Analog Out Microcontroller and Memory Interface Logic Data Port Address Port Control Port Analog In A-to-D Converter AT76C401 Block Diagram A CMOS imager system on a par with CCD... The AT76C401 is designed to give significant cost reduction benefits to the system integrator while retaining an image quality on a par with that of chargecoupled device (CCD) imagers in terms of resolution and color rendition. The pixel density of 1281 (horizontal) x 480 (vertical) and Polaroid's patented color interpolation algorithm gives a captured image roughly equivalent to twice VGA. For the same color resolution, an equivalent CCD imager using a standard complementary color mosaic filter would be specified as approximately 1024 x 768. ... but with a fraction of the total production cost! The AT76C401 integrates color image sensors with analog signal conditioning and digital control circuitry. The use of industry standard CMOS enables an unprecedented level of integration of the processing devices, giving a significant reduction in overall system costs. Unique Flexibility A single 3.3V rail supply is all that is required and standard microprocessoraccuracy timing is used. There are no negative substrates to generate and no need to conform to complex analog timing waveforms. The timing insensitivity of the active pixels and the integrated pixel or image addressing give a unique flexibility in selecting the region of interest. This enables simple digital zoom or image pre-sampling for level optimization or focus control. Shortform Specification Array: Pixel size: Dark cells: Total pixels: Effective pixels: Data: Data rate: Exposure time: Global gain: Individual color gain: Temporal noise: Fixed pattern noise: Dynamic range: Blooming protection: Voltage supply: Package: Temperature range: Optical size: 1305 (H) x 490 (V) pixels 6 micron x 12 micron 21(H) x 9 (V) 640K (approx.) 615K (approx.) 10-bit width RGB sequential 10M pixels/second 2 s to 1s 1x to 8x in 4 steps 1x to 2.5x in 32 steps 0.1% of full well 0.2% > 60 dB > 40 dB 3.3V +/- 10% 44-pin ceramic LCC or bare die -20C to 50C 9.5 mm (approx.) Individual color offset: 46 dB in 256 steps R (c) Atmel Corporation 2000 Terms and product names may be trademarks of others. All figures in this brochure are for illustrative purposes only. See Atmel data books for definitive figures and for applicable limitations and warranties. 0966C-05/00/12M |
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