REV. PrB

Preliminary Technical Data

PRELIMINARY TECHNICAL DATA

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.

a

ADV7202

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

Simultaneous Sampling

Video Rate Codec

FUNCTIONAL BLOCK DIAGRAM

AIN1P

D/A

ADC

LOGIC

I/P

MUX

MUX

SHA AND

CLAMP

SHA AND

CLAMP

SHA AND

CLAMP

A/D

A/D

AIN1M

AIN2P

AIN2M

AIN3P

AIN3M

AIN4P

AIN4M

AIN5P

AIN5M

AIN6P

AIN6M

8-BIT 843KHz

ADC BLOCK

12-BIT

10-BIT

D/A

10-BIT

D/A

10-BIT

D/A

10-BIT

DAC

LOGIC

ADV7202

XTAL

DOUT

[9:0]

DAC DATA

[9:0]

OSD I/P "S"

DAC0

DAC1

DAC2

DAC3

FEATURES

Four 10-Bit Video DACs (4:2:2, YCrCb, RGB I/P

Supported)

10-Bit Video Rate Digitization at Up to 54 Mhz

AGC Control ( 6 dB)

Front-End 3-Channel Clamp Control

Up to Five CVBS Input Channels, Two Component YUV,

Three S-Video, or a combination of the above. Simul-

taneous Digitization of Two CVBS Input Channels.

Aux 8-Bit SAR ADC @ 843 kHz Sampling Giving up to

Eight General Purpose Inputs

RGB Inputs for Picture-on-Picture of the RGB DACs

APPLICATIONS

Picture-on-Picture Video Systems

Simultaneous Video Rate Processing

Hybrid Set-Top Box TV Systems

Direct Digital Synthesis/I-Q Demodulation

Image Processing

GENERAL DESCRIPTION

The ADV7202 is a video rate sampling Codec.

It has the capability of sampling up to five NTSC/PAL/SECAM

video I/P signals. The resolution on the front-end digitizer is

12 bits; 2 bits (12 dB) are used for gain and offset adjustment.

The digitizer has a conversion rate of 54 MHz.

It also has up to eight auxiliary inputs that can be sampled by

an 843 kHz SAR ADC for system monitoring, etc.

The back end consists of four 10-bit DACs that run at up to

54 MHz and can be used to output CVBS, S-Video, Component

YCrCb, and RGB.

This Codec also supports Picture-on-Picture with the 3-channel

I/P mux that also muxes to the DAC O/Ps.

The ADV7202 can operate at 3.3 V or 5 V. Its monolithic CMOS

construction ensures greater functionality with lower power

dissipation.

The ADV7202 is packaged in a small 64-lead LQFP package.