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AD9995 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9995 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 60 page Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or oth- erwise under any patent or patent rights of Analog Devices.Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. AD9995 12-Bit CCD Signal Processor with Precision Timing™ Generator FUNCTIONAL BLOCK DIAGRAM AD9995 CDS VGA CLAMP 12-BIT ADC 12 DCLK MSHUT STROBE CLO CLI DOUT VREF 6dB TO 42dB HORIZONTAL DRIVERS V-H CONTROL 4 6 5 RG H1–H4 V1–V6 VSG1–VSG5 VRT VRB PRECISION TIMING GENERATOR SYNC GENERATOR INTERNAL CLOCKS VSUB SUBCK HD VD SYNC INTERNAL REGISTERS SL SCK DATA CCDIN FEATURES 6-Phase Vertical Transfer Clock Support Correlated Double Sampler (CDS) 6 dB to 42 dB 10-Bit Variable Gain Amplifier (VGA) 12-Bit 36 MHz A/D Converter Black Level Clamp with Variable Level Control Complete On-Chip Timing Generator Precision Timing Core with <600 ps Resolution On-Chip 3 V Horizontal and RG Drivers 2-Phase and 4-Phase H-Clock Modes Electronic and Mechanical Shutter Modes On-Chip Driver for External Crystal On-Chip Sync Generator with External Sync Input 56-Lead LFCSP Package APPLICATIONS Digital Still Cameras Digital Video Camcorders Industrial Imaging GENERAL DESCRIPTION The AD9995 is a highly integrated CCD signal processor for digital still camera and camcorder applications. It includes a complete analog front end with A/D conversion, combined with a full-function programmable timing generator.The timing genera- tor is capable of supporting both 4- and 6-phase vertical clocking. A Precision Timing core allows adjustment of high speed clocks with less than 600 ps resolution at 36 MHz operation. The AD9995 is specified at pixel rates of up to 36 MHz.The analog front end includes black level clamping, CDS,VGA, and a 12-bit A/D converter.The timing generator provides all the necessary CCD clocks: RG, H-clocks,V-clocks, sensor gate pulses, substrate clock, and substrate bias control. Operation is programmed using a 3-wire serial interface. Packaged in a space-saving 56-lead LFCSP, the AD9995 is speci- fied over an operating temperature range of –20°C to +85°C. REV. 0 |
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