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TC253 Datasheet(PDF) 2 Page - Texas Instruments |
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TC253 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 19 page TC253SPD 680×500 PIXEL CCD IMAGE SENSOR SOCS062B – JANUARY 2001 – REVISED MAY 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) The image-sensing area of the TC253SPD sensor is configured into 500 lines with 680 pixels in each line. Twenty-two pixels are reserved in each line for dark reference. The blooming protection is based on an advanced lateral overflow drain concept that does not reduce NIR response. The sensor can be operated in the interlaced or progressive scan modes and can capture full 340,000 pixels in one image field. The frame transfer from the image-sensing area to the memory area is accomplished at a very high rate that minimizes image smear. The electronic exposure control is achieved by clearing unwanted charge from the image area using a short positive pulse applied to the antiblooming drain. This pulse marks the beginning of the integration time, which can be arbitrarily shortened from its nominal length. After charge is integrated and stored in the memory it is available for readout in the next cycle. This is accomplished using a unique serial register design that includes special charge multiplication pixels. The TC253SPD sensor is built using TI-proprietary advanced split-gate virtual-phase CCD (SGVPCCD) technology, which provides devices with wide spectral response, ranging from DUV to NIR, high quantum efficiency (QE), low dark current, and high response uniformity. The TC253SPD sensor is characterized over an operating free-air temperature range of TA= –10°C to 45°C. |
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