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ADV7121 датащи(PDF) 1 Page - Analog Devices |
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ADV7121 датащи(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 80 MHz, Triple 10-Bit Video DACs ADV7121/ADV7122 © Analog Devices, Inc., 1996 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 ADV7121 FUNCTIONAL BLOCK DIAGRAM PIXEL INPUT PORT IOR IOG IOB R0 R9 CLOCK 10 ADV7121 VREF G0 G9 10 B0 B9 10 FS ADJUST 10 10 10 V AA REFERENCE AMPLIFIER COMP DAC DAC RED REGISTER BLUE REGISTER GREEN REGISTER DAC GND ADV7122 FUNCTIONAL BLOCK DIAGRAM PIXEL INPUT PORT IOR IOG IOB R0 R9 CLOCK 10 SYNC ADV7122 GND G0 G9 10 B0 B9 10 BLANK FS ADJUST 10 10 10 V AA REFERENCE AMPLIFIER COMP DAC DAC RED REGISTER BLUE REGISTER CONTROL REGISTER GREEN REGISTER DAC SYNC CONTROL V REF FEATURES 80 MHz Pipelined Operation Triple 10-Bit D/A Converters RS-343A/RS-170 Compatible Outputs TTL Compatible Inputs +5 V CMOS Monolithic Construction 40-Pin DIP Package (ADV7121) 44-Pin PLCC Package (ADV7122) 48-Lead TQFP (ADV7122) APPLICATIONS High Definition Television (HDTV) High Resolution Color Graphics CAE/CAD/CAM Applications Image Processing Instrumentation Video Signal Reconstruction Direct Digital Synthesis (DDS) I/Q Modulation SPEED GRADES 80 MHz 50 MHz 30 MHz ADV is a registered trademark of Analog Devices, Inc. *Speed grades up to 140 MHz are also available on special request. Please contact Analog Devices or its representatives for details. GENERAL DESCRIPTION The ADV7121/ADV7122 (ADV ®) is a video speed, digital-to- analog converter on a single monolithic chip. The part is specifi- cally designed for high resolution color graphics and video systems including high definition television (HDTV). It is also ideal for any application requiring a low cost, high speed DAC function especially in communications. It consists of three, high speed, 10-bit, video D/A converters (RGB), a standard TTL input interface and high impedance, analog output, current sources. The ADV7121/ADV7122 has three separate, 10-bit, pixel input ports, one each for red, green and blue video data. A single +5 V power supply, an external 1.23 V reference and pixel clock input is all that is required to make the part operational. The ADV7122 has additional video control signals, composite SYNC and BLANK. The ADV7121/ADV7122 is capable of generating RGB video output signals which are compatible with RS-343A, RS-170 and most proposed production system HDTV video standards, in- cluding SMPTE 240M. The ADV7121/ADV7122 is fabricated in a +5 V CMOS pro- cess. Its monolithic CMOS construction ensures greater func- tionality with low power dissipation. The ADV7121 is packaged in a 0.6", 40-pin plastic DIP package. The ADV7122 is pack- aged in a 44-pin plastic leaded (J-lead) chip carrier, PLCC, and 48-lead thin quad flatpack (TQFP). PRODUCT HIGHLIGHTS 1. Fast video refresh rate, 80 MHz. 2. Guaranteed monotonic to 10 bits. Ten bits of resolution al- lows for implementation of linearization functions such as gamma correction and contrast enhancement. 3. Compatible with a wide variety of high resolution color graphics systems including RS-343A/RS-170 and the pro- posed SMPTE 240M standard for HDTV. |
Аналогичный номер детали - ADV7121 |
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Аналогичное описание - ADV7121 |
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