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AD9826KRSZ Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9826KRSZ Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 20 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 otherwise under any patent or patent rights of Analog Devices. a AD9826 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: © Analog Devices, Inc., Complete 16-Bit Imaging Signal Processor FUNCTIONAL BLOCK DIAGRAM OEB DOUT SCLK SLOAD SDATA ADCCLK CDSCLK2 CDSCLK1 OFFSET VINB VING VINR AVDD AVSS CML CAPT AVDD AVSS BANDGAP REFERENCE AD9826 DRVDD DRVSS GAIN REGISTERS OFFSET REGISTERS 3:1 MUX 16:8 MUX 16-BIT ADC DIGITAL CONTROL INTERFACE CONFIGURATION REGISTER RED GREEN BLUE MUX REGISTER 8 16 RED GREEN BLUE PGA 6 9 PGA PGA CDS 9-BIT DAC CDS 9-BIT DAC CDS 9-BIT DAC INPUT CLAMP BIAS CAPB FEATURES 16-Bit 15 MSPS A/D Converter 3-Channel 16-Bit Operation up to 15 MSPS 1-Channel 16-Bit Operation up to 12.5 MSPS 2-Channel Mode for Mono Sensors with Odd/Even Outputs Correlated Double Sampling 1~6 Programmable Gain 300 mV Programmable Offset Input Clamp Circuitry Internal Voltage Reference Multiplexed Byte-Wide Output Optional Single Byte Output Mode 3-Wire Serial Digital Interface 3 V/5 V Digital I/O Compatibility 28-Lead SSOP Package Low Power CMOS: 400 mW (Typ) Power-Down Mode Available APPLICATIONS Flatbed Document Scanners Digital Copier Multifunction Peripherals Infrared Imaging Applications Machine Vision PRODUCT DESCRIPTION The AD9826 is a complete analog signal processor for imaging applications. It features a 3-channel architecture designed to sample and condition the outputs of trilinear color CCD arrays. Each channel consists of an input clamp, Correlated Double Sampler (CDS), offset DAC, and Programmable Gain Amplifier (PGA), multiplexed to a high-performance 16-bit A/D converter. The AD9826 can operate at speeds greater than 15 MSPS with reduced performance. The CDS amplifiers may be disabled for use with sensors that do not require CDS, such as Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays. The 16-bit digital output is multiplexed into an 8-bit output word, which is accessed using two read cycles. There is an optional single byte output mode. The internal registers are programmed through a 3-wire serial interface, and provide adjustment of the gain, offset, and operating mode. The AD9826 operates from a single 5 V power supply, typically consumes 400 mW of power, and is packaged in a 28-lead SSOP. REV. B |
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