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AD9845BJST Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9845BJST Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 24 page REV. A 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. Trademarks and registered trademarks are the property of their respective companies. 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. AD9845B Complete 12-Bit 30 MSPS CCD Signal Processor FEATURES Pin Compatible with AD9845A Designs 12-Bit 30 MSPS A/D Converter 30 MSPS Correlated Double Sampler (CDS) 4 dB 6 dB 6-Bit Pixel Gain Amplifier ( PxGA®) 2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA) Low Noise Clamp Circuits Preblanking Function Auxiliary Inputs with VGA and Input Clamp 3-Wire Serial Digital Interface 3 V Single-Supply Operation Low Power: 153 mW @ 3 V Supply Space-Saving 48-Lead LQFP Package APPLICATIONS High Performance Digital Still Cameras Industrial/Scientific Imaging FUNCTIONAL BLOCK DIAGRAM DATACLK SHD SHP 2:1 MUX DOUT AUX2IN CLPDM CCDIN AUX1IN INTERNAL TIMING 2dB~36dB AVDD DVDD DVSS AVSS DRVDD DRVSS 10 8 DIGITAL INTERFACE SDATA SCK SL CDS VGA BUF 2:1 MUX CLP AD9845B CLP ADC COLOR STEERING HD VD PxGA 6 BAND GAP REFERENCE VRT VRB CLP 12 BLK CLAMP LEVEL CONTROL REGISTERS CLPOB PBLK 4dB 6dB GENERAL DESCRIPTION The AD9845B is an improved version of the AD9845A CCD signal processor. It features a 30 MHz single-channel architec- ture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9845B’s signal chain consists of an input clamp, a correlated double sampler (CDS), PxGA, a digitally controlled VGA, a black level clamp, and a 12-bit A/D converter. Additional input modes are also provided for processing analog video signals. The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes. The AD9845B operates from a single 3 V power supply, typi- cally dissipates 153 mW, and is packaged in a 48-lead LQFP. |
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Podobny opis - AD9845BJST |
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