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ADV7121

Part Number	ADV7121
Manufacturer	Analog Devices
Description	CMOS 80 MHz/ Triple 10-Bit Video DACs
Published	Mar 23, 2005
Detailed Description	a FEATURES 80 MHz Pipelined Operation Triple 10-Bit D/A Converters RS-343A/RS-170 Compatible Outputs TTL Compatible Inpu...
Datasheet	ADV7121 PDF File

Overview

a 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 GENERAL DESCRIPTION CMOS 80 MHz, Triple 10-Bit Video DACs ADV7121/ADV7122 ADV7121 FUNCTIONAL BLOCK DIAGRAM VAA FS ADJUST VREF ADV7121 CLOCK REFERENCE AMPLIFIER COMP R0 R9 10 RED REGISTER 10 DAC IOR PIXEL INPUT PORT G0 G9 10 GREEN REGISTER 10 DAC IOG B0 B9 10 BLUE REGISTER 10 DAC IOB GND ADV7122 FUNCTIONAL BLOCK DIAGRAM VAA FS ADJUST VREF ADV7122 CLOCK REFERENCE AMPLIFIER COMP The ADV7121/ADV7122 (ADV ) is a video speed, digital-toanalog converter on a single monolithic chip.
The part is specifically 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, including SMPTE 240M.
The ADV7121/ADV7122 is fabricated in a +5 V CMOS process.
Its monolithic CMOS construction ensures gre...

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