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ADV476KP35 Folha de dados(PDF) 1 Page - Analog Devices |
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ADV476KP35 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 12 page REV. B 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a CMOS Monolithic 256 18 Color Palette RAM-DAC ADV476 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FUNCTIONAL BLOCK DIAGRAM FEATURES Personal System/2* and VGA* Compatible Plug-in Replacement for INMOS 171/176 66 MHz Pipelined Operation Three 6-Bit D/A Converters 256 18 Color Palette RAM RS-343A/RS-170 Compatible Outputs Blank on All Three Channels Standard MPU Interface Asynchronous Access to All Internal Registers 5 V CMOS Monolithic Construction Low Power Dissipation Standard 28-Pin, 0.6" DIP and 44-Pin PLCC APPLICATIONS High Resolution Color Graphics CAE/CAD/CAM Applications Image Processing Instrumentation Desktop Publishing AVAILABLE CLOCK RATES 66 MHz 50 MHz 35 MHz GENERAL DESCRIPTION The ADV476 (ADV®) is a pin compatible and software compat- ible RAM-DAC designed specifically for VGA and Personal System/2 color graphics. The ADV476 is a complete analog output RAM-DAC on a single monolithic chip. The part contains a 256 18 color lookup table, a pixel mask register as well as a triple 6-bit video D/A converter. The ADV476 is capable of simultaneously dis- playing up to 256 colors, from a total color palette of 262,144 addressable colors. The on-chip asynchronous MPU bus allows access to the color lookup table without affecting the input video data via the pixel port. The pixel read mask register provides a convenient way of altering the displayed colors without updating the color lookup table. The ADV476 is capable of generating RGB video output signals which are compatible with RS-343A and RS-170 video standards, without requiring external buffering. The ADV476 is fabricated in a +5 V CMOS process. Its mono- lithic CMOS construction ensures greater functionality with low power dissipation and small board area. The part is packaged in a 0.6", 28-pin DIP and a 44-pin PLCC. PRODUCT HIGHLIGHTS 1. Standard video refresh rates, 35 MHz, 50 MHz and 66 MHz. 2. Fully compatible with VGA and Personal System/2 color graphics. 3. Guaranteed monotonic. Integral and differential linearity guaranteed to be a maximum of ±1 LSB. 4. Low glitch energy, 75 pV secs. *Personal System/2 and VGA are trademarks of International Business Machines Corp. ADV is a registered trademark of Analog Devices, Inc. |
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