CMOS, 330 MHz
Triple 10-Bit High Speed Video DAC
ADV7123
FUNCTIONAL BLOCK DIAGRAM
FEATURES
V
AA
330 MSPS throughput rate
Triple 10-bit digital-to-analog converters (DACs)
SFDR
−70 dB at fCLK = 50 MHz; fOUT = 1 MHz
−53 dB at fCLK = 140 MHz; fOUT = 40 MHz
RS-343A-/RS-170-compatible output
Complementary outputs
DAC output current range: 2.0 mA to 26.5 mA
TTL-compatible inputs
Internal reference (1.235 V)
BLANK
SYNC
BLANK AND
SYNC LOGIC
IOR
IOR
DATA
10
10
10
10
DAC
DAC
DAC
R9 TO R0
G9 TO G0
B9 TO B0
REGISTER
IOG
IOG
DATA
REGISTER
IOB
IOB
DATA
REGISTER
10
10
Single-supply 5 V/3.3 V operation
48-lead LQFP package
Low power dissipation (30 mW minimum @ 3 V)
Low power standby mode (6 mW typical @ 3 V)
Industrial temperature range (−40°C to +85°C)
Pb-free (lead-free) package
VOLTAGE
REFERENCE
CIRCUIT
POWER-DOWN
MODE
PSAVE
CLOCK
V
REF
ADV7123
GND
R
COMP
SET
Figure 1.
APPLICATIONS
Digital video systems (1600 × 1200 @ 100 Hz)
High resolution color graphics
Digital radio modulation
Image processing
Instrumentation
Video signal reconstruction
GENERAL DESCRIPTION
The ADV7123 (ADV®) is a triple high speed, digital-to-analog
converter on a single monolithic chip. It consists of three high
speed, 10-bit, video DACs with complementary outputs, a
standard TTL input interface, and a high impedance, analog
output current source.
The ADV7123 is fabricated in a 5 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with lower power dissipation. The ADV7123 is available in a
48-lead LQFP package.
PRODUCT HIGHLIGHTS
The ADV7123 has three separate 10-bit-wide input ports. A
single 5 V/3.3 V power supply and clock are all that are required
to make the part functional. The ADV7123 has additional video
1. 330 MSPS throughput.
2. Guaranteed monotonic to 10 bits.
3. Compatible with a wide variety of high resolution color
graphics systems, including RS-343A and RS-170.
SYNC
BLANK
control signals, composite
and
.
The ADV7123 also has a power save mode.
ADV is a registered trademark of Analog Devices, Inc.
Rev. D
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
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Tel: 781.329.4700
Fax: 781.461.3113
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©2010 Analog Devices, Inc. All rights reserved.
ADI [ ADI ]
