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ADV7122KST50 Datasheet(PDF) 1 Page - Analog Devices

No. de pieza ADV7122KST50
Descripción Electrónicos  CMOS 80 MHz, Triple 10-Bit Video DACs
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADV7122KST50 Datasheet(HTML) 1 Page - Analog Devices

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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.


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