REV. 0

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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, 10-Bit Video DAC

ADV7128

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

FUNCTIONAL BLOCK DIAGRAM

I

OUT

CLOCK

ADV7128

D0

D9

10

FS

ADJUST

10

V

AA

REFERENCE

AMPLIFIER

COMP

DAC

DATA

REGISTER

GND

V

REF

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.

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.

GENERAL DESCRIPTION

verter on a single monolithic chip. It consists of a high speed,

10-bit, video D/A converters; a standard TTL input interface;

and a high impedance, analog output, current source.

The 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.

The ADV7128 is capable of generating video output signals

which are compatible with RS-343A, RS-170 and most pro-

posed production system HDTV video standards, including

SMPTE 240M.

The ADV7128 is fabricated in a +5 V CMOS process. Its

monolithic CMOS construction ensures greater functionality

with low power dissipation. The ADV7128 is available in a 28-

lead small outline IC (SOIC).

ADV is a registered trademark of Analog Devices, Inc.

FEATURES

80 MHz Pipelined Operation

10-Bit D/A Converters

RS-343A/RS-170 Compatible Outputs

TTL Compatible Inputs

+5 V CMOS Monolithic Construction

28-Pin SOIC Package

APPLICATIONS

High Definition Television (HDTV)

High Resolution Color Graphics

Digital Radio Modulation

CAE/CAD/CAM Applications

Image Processing

Instrumentation

Video Signal Reconstruction

Direct Digital Synthesis (DDS) & I/O Modulation

Wireless LAN

Wireless Local Loop

SPEED GRADES

80 MHz

50 MHz

30 MHz