ADV7123 Datasheet, PDF (1/20 Pages) Analog Devices – CMOS, 240 MHz Triple 10-Bit High Speed Video DAC

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CMOS, 330 MHz
Triple 10-Bit High Speed Video DAC
ADV7123
FEATURES
330 MSPS Throughput Rate
Triple 10-Bit D/A Converters
SFDR
–70 dB at f_CLK = 50 MHz; f_OUT = 1 MHz
–53 dB at f_CLK = 140 MHz; f_OUT = 40 MHz
RS-343A/RS-170 Compatible Output
Complementary Outputs
DAC Output Current Range 2 mA to 26 mA
TTL Compatible Inputs
Internal Reference (1.23 V)
Single-Supply 5 V/3.3 V Operation
48-Lead LQFP Package
Low Power Dissipation (30 mW Min @ 3 V)
Low Power Standby Mode (6 mW Typ @ 3 V)
Industrial Temperature Range (–40؇C to +85؇C)
APPLICATIONS
Digital Video Systems (1600 ؋ 1200 @ 100 Hz)
High Resolution Color Graphics
Digital Radio Modulation
Image Processing
Instrumentation
Video Signal Reconstruction
FUNCTIONAL BLOCK DIAGRAM
V_AA
BLANK
SYNC
BLANK AND
SYNC LOGIC
R9–R0 10
DATA
REGISTER
10
DAC
G9–G0 10
DATA
REGISTER
10
DAC
B9–B0 10
DATA
REGISTER
10
DAC
PSAVE
CLOCK
POWER-DOWN
MODE
VOLTAGE
REFERENCE
CIRCUIT
ADV7123
GND
R_SET COMP
IOR
IOR
IOG
IOG
IOB
IOB
V_REF
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 D/A converters with complementary
outputs, a standard TTL input interface, and a high impedance,
analog output current source.
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
control signals, composite SYNC and BLANK.
The ADV7123 also has a Power-Save Mode.
The ADV7123 is fabricated in a 5 V CMOS process. Its mono-
lithic CMOS construction ensures greater functionality with
lower power dissipation. The ADV7123 is available in a
48-lead LQFP package.
PRODUCT HIGHLIGHTS
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
ADV is a registered trademark of Analog Devices, Inc.
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 2002