CMOS
a
80 MHz, 10-Bit Video DAC
ADV7128
FEATURES
80 MHz Pipelined Operation
10-Bit D/ A Converters
FUNCTIO NAL BLO CK D IAGRAM
FS
VAA
VREF
ADJUST
RS-343A/ RS-170 Com patible Outputs
TTL Com patible Inputs
+5 V CMOS Monolithic Construction
28-Pin SOIC Package
REFERENCE
AMPLIFIER
ADV7128
COMP
CLOCK
APPLICATIONS
High Definition Television (HDTV)
High Resolution Color Graphics
Digital Radio Modulation
CAE/ CAD/ CAM Applications
Im age Processing
10
DATA
REGISTER
D0
D9
DAC
IOUT
10
GND
Instrum entation
Video Signal Reconstruction
Direct Digital Synthesis (DDS) & I/ O Modulation
Wireless LAN
Wireless Local Loop
SPEED GRADES
80 MHz
50 MHz
30 MHz
GENERAL D ESCRIP TIO N
P RO D UCT H IGH LIGH TS
1. Fast video refresh rate, 80 MHz.
T he ADV7128 (ADV ) is a video speed, digital-to-analog con-
verter on a single monolithic chip. It consists of a high speed,
10-bit, video D/A converters; a standard T T L input interface;
and a high impedance, analog output, current source.
2. Guaranteed monotonic to 10 bits. T en bits of resolution al-
lows for implementation of linearization functions such as
gamma correction and contrast enhancement.
T he ADV7128 has a 10-bit pixel input port. A single +5 V
power supply, an external 1.23 V reference and pixel clock input
are and all that are required to make the part operational.
3. Compatible with a wide variety of high resolution color
graphics systems including RS-343A/RS-170 and the pro-
posed SMPT E 240M standard for HDT V.
T he ADV7128 is capable of generating video output signals
which are compatible with RS-343A, RS-170 and most pro-
posed production system HDT V video standards, including
SMPT E 240M.
4. Combined with a numerically controlled oscillator (AD9955),
it forms a complete frequency synthesizer (DDS).
5. Using the parts reduced power output DAC modes, it is
ideal for power and cost sensitive communications type
applications.
T he ADV7128 is fabricated in a +5 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with low power dissipation. T he ADV7128 is available in a 28-
lead small outline IC (SOIC).
AD V is a r egister ed tr adem ar k of Analog D evices, Inc.
REV. 0
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.
Tel: 617/ 329-4700
Fax: 617/ 326-8703