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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

ADV7175A/ADV7176A*

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1998

High Quality, 10-Bit, Digital CCIR-601

to PAL/NTSC Video Encoder

FUNCTIONAL BLOCK DIAGRAM

FEATURES

ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder

High Quality 10-Bit Video DACs

Integral Nonlinearity <1 LSB at 10 Bits

NTSC-M, PAL-M/N, PAL-B/D/G/H/I

Single 27 MHz Clock Required ( 2 Oversampling)

80 dB Video SNR

32-Bit Direct Digital Synthesizer for Color Subcarrier

Multistandard Video Output Support:

Composite (CVBS)

Component S-Video (Y/C)

Component YUV and RGB

EuroSCART Output (RGB + CVBS/LUMA)

Video Input Data Port Supports:

CCIR-656 4:2:2 8-Bit Parallel Input Format

4:2:2 16-Bit Parallel Input Format

SMPTE 170M NTSC Compatible Composite Video

ITU-R BT.470 PAL Compatible Composite Video

Full Video Output Drive or Low Signal Drive Capability

34.7 mA max into 37.5

(Doubly-Terminated 75R)

5 mA min with External Buffers

Programmable Simultaneous Composite

and S-Video Y/C or RGB (SCART)/YUV Video Outputs

Programmable Luma Filters (Low-Pass/Notch/Extended)

Programmable VBI (Vertical Blanking Interval)

Programmable Subcarrier Frequency and Phase

Programmable LUMA Delay

Individual ON/OFF Control of Each DAC

CCIR and Square Pixel Operation

Integrated Subcarrier Locking to External Video Source

Color Signal Control/Burst Signal Control

Interlaced/Noninterlaced Operation

Complete On-Chip Video Timing Generator

Programmable Multimode Master/Slave Operation

Macrovision Antitaping Rev 7.01 (ADV7175A Only)**

Closed Captioning Support

Teletext Insertion Port (PAL-WST)

Onboard Color Bar Generation

Onboard Voltage Reference

Single Supply +5 V or + 3 V Operation

Small 44-Lead PQFP Thermally Enhanced Package

APPLICATIONS

MPEG-1 and MPEG-2 Video, DVD, Digital Satellite/

Cable Systems (Set Top Boxes/IRDs), Digital TVs,

CD Video/Karaoke, Video Games, PC Video/Multimedia

*Protected by U.S. patents numbers 5,343,196 and 5,442,355 and other intellectual property rights.

**This device is protected by U.S. Patent Numbers 4631603, 4577216, 4819098 and other intellectual property rights. The Macrovision anticopy process is

licensed for noncommercial home use only, which is its sole intended use in the device. Please contact sales office for latest Macrovision version available.

NOTE: ITU-R and CCIR are used interchangeably in this document (ITU-R has replaced CCIR recommendations).

(Continued on page 11)

GENERAL DESCRIPTION

The ADV7175A/ADV7176A is an integrated digital video en-

coder that converts Digital CCIR-601 4:2:2 8 or 16-bit compo-

nent video data into a standard analog baseband television

YUV TO

RBG

MATRIX

8

8

8

10

8

8

8

10

8

8

8

10

INTER-

POLATOR

YCrCb

TO

YUV

MATRIX

SIN/COS

DDS BLOCK

10

10

10

10

10

10

M

U

L

T

I

P

L

E

X

E

R

VIDEO TIMING

GENERATOR

4:2:2 TO

4:4:4

INTER-

POLATOR

VOLTAGE

REFERENCE

CIRCUIT

SCLOCK SDATA ALSB

HSYNC

FIELD/

VSYNC

BLANK

CLOCK

GND

DAC D (PIN 27)

DAC A (PIN 32)

COMP

V

LOW-PASS

FILTER

ADD

BURST

8

8

8

ADV7175A/ADV7176A

10-BIT

DAC

COLOR

DATA

P7–P0

P15–P8

10-BIT

DAC

10-BIT

DAC

REAL-TIME

CONTROL

CIRCUIT

SCRESET/RTC

INTER-

POLATOR

ADD

BURST

INTER-

POLATOR

ADD

SYNC

U

LOW-PASS

FILTER

Y

LOW-PASS

FILTER

10-BIT

DAC

DAC C (PIN 26)

DAC B (PIN 31)

TELETEXT

INSERTION

BLOCK

TTXREQ

TTX

RESET