CMOS 80 MHz/ Triple 10-Bit Video DACs
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FEATURES 80 MHz Pipelined Operation Triple 10-Bit D/A Converters RS-343A/RS-170 Compatible Outputs TTL Compatible Inpu...
Description
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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 s...
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