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© Analog Devices, Inc., 2002

ADV7125

CMOS, 330 MHz

Triple 8-Bit High Speed Video DAC

a

ADV is a registered trademark of Analog Devices, Inc.

FEATURES

330 MSPS Throughput Rate

Triple 8-Bit DACs

RS-343A/RS-170 Compatible Output

Complementary Outputs

DAC Output Current Range 2 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

High Resolution Color Graphics

Digital Radio Modulation

Image Processing

Instrumentation

Video Signal Reconstruction

FUNCTIONAL BLOCK DIAGRAM

R7–R0

GND

IOR

IOR

COMP

ADV7125

VOLTAGE

REFERENCE

CIRCUIT

G7–G0

B7–B0

IOG

IOG

IOB

IOB

PSAVE

POWER-DOWN

MODE

BLANK

SYNC

CLOCK

DAC

8

DATA

REGISTER

8

DAC

8

DATA

REGISTER

8

DAC

8

DATA

REGISTER

BLANK AND

SYNC LOGIC

8

GENERAL DESCRIPTION

The ADV

on a single monolithic chip. It consists of three high speed, 8-bit

video DACs with complementary outputs, a standard TTL input

interface, and a high impedance, analog output current source.

The ADV7125 has three separate 8-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 ADV7125 has additional video control

signals, composite

SYNC and BLANK, as well as a power-

save mode.

The ADV7125 is fabricated in a 5 V CMOS process. Its mono-

lithic CMOS construction ensures greater functionality with

lower power dissipation. The ADV7125 is available in a 48-lead

LQFP package.

PRODUCT HIGHLIGHTS

1. 330 MSPS (3.3 V only) throughput

2. Guaranteed monotonic to eight bits

3. Compatible with a wide variety of high resolution color

graphics systems, including RS-343A and RS-170