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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM9800 датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM9800 датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 34 page  LM9800 8-Bit Greyscale/24-Bit Color Linear CCD Sensor Processor General Description The LM9800 is a high performance integrated signal processor/digitizer for linear CCD image scanners. The LM9800 performs all the analog processing (correlated double sampling for black level and offset compensation, pixel-by-pixel gain adjust, and 8-bit analog-to-digital conver- sion) necessary to maximize the performance of a wide range of linear CCD sensors. The LM9800 can be digitally programmed to work with a wide variety of CCDs from different manufacturers. An inter- nal configuration register sets CCD and sampling timing to maximize performance, simplifying the design and manufac- turing processes. The LM9800 can be used with sequential or parallel output color CCDs. Coarse gain switching brings weak Blue signals up to Red/Green levels for best performance. For comple- mentary voltage reference see the LM4041. Applications n Color and Greyscale Flatbed and Sheetfed Scanners n General Purpose CCD Imaging Features n 2.5 million pixels/s conversion rate n Implements Correlated Double Sampling for minimum noise and offset error n Pixel-to-pixel gain correction for individual pixels maximizes dynamic range and resolution, even on “weak” pixels n Reference and signal sampling points digitally controlled in 25ns increments for maximum performance n Generates all necessary CCD clock signals n Compatible with a wide range of linear CCDs n TTL/CMOS input/output compatible Key Specifications n Resolution 8 Bits n Pixel Conversion Rate 2.5MHz n Supply Voltage +5V ±5% n Supply Voltage (Digital I/O) +3.3V ±10% or +5V ±5% n Power Dissipation 210 mW (typ) Connection Diagram TRI-STATE® is a registered trademark of National Semiconductor Corporation. MICROWIRE™ is a trademark of National Semiconductor Corporation. DS012498-1 September 1997 © 1997 National Semiconductor Corporation DS012498 www.national.com |
Аналогичный номер детали - LM9800 |
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Аналогичное описание - LM9800 |
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