ANALOG DEVICES AD9887A Service Manual

Integrated Dual Interface Solution for Unparalleled Image Quality and
Maximum Interoperability.

The AD9887A has been designed with high performance and interoperability in mind.
Today’s high resolution displays must be able to assure legacy compatibility, be
“digital ready” for the future, and provide the best image quality possible.

The AD9887A is pin-to-pin and software compatible with the AD9887, it is a drop in
replacement for the AD9887 for an immediate upgrade to UXGA resolution.

The analog interface contains a 170 MHz triple ADC that supports resolutions up to
UXGA (1600  1200 at 60 Hz) with low-jitter PLL, fully integrated sync processing,
and midscale clamp.

The digital interface contains a DVI version 1.0 compatible receiver and supports
display resolutions up to UXGA (1600  1200 at 60 Hz).

With the inclusion of HDCP, displays may now receive encrypted video content. The
AD9887A allows for authentication of a video receiver, decryption of encoded data,
and renewability of the authentication during transmission as specified by the HDCP
version 1.0 protocol.

Key Features

•

Both interfaces
optimized to support
display resolutions up to
1600  1200 at 60 Hz
and all HDTV formats

•

Pin-to-pin and software
compatible with the
AD9887 for
immediate upgrade

•

Analog interface
combines high
performance triple A/D
converters with a
low-jitter PLL for superior
image quality

•

Digital interface is fully
compatible with DVI
version 1.0 for FPDs to
ensure unsurpassed
image quality
and compatibility

•

DVI receiver includes
support for HDCP
with encrypted external
HDCP device key
storage for maximum
security and ease
of manufacturing

•

Midscale clamping for
HDTV and DTV
applications (YPbPr signals)

•

Integrated sync processing
for composite sync and
sync-on-green
(SOG) applications

•

4:2:2 output formatting
for component
video applications

•

Evaluation board with full
schematics and software
is available

AD9887A—High Performance
Dual Interface for Flat Panel Displays

Worldwide
Headquarters

One Technology Way
P.O. Box 9106
Norwood, MA
02062-9106, U.S.A.
Tel: [phone]
(1 800 262 5643,
U.S.A. only)
Fax: [phone]

www.analog.com

Japan
Headquarters

New Pier Takeshiba
South Tower Building
1-16-1 Kaigan,
Minato-ku Tokyo
105-6891, Japan
Tel: [phone]
Fax: [phone]

Southeast Asia
Headquarters

4501 Nat West Tower
Times Square
1 Matheson Street
Causeway Bay
Hong Kong, PRC
Tel: [phone]
Fax: [phone]

© Analog Devices, Inc., 2002. All rights reserved. The Analog Devices logo
is a registered trademark. Other trademarks and registered trademarks are
the property of their respective companies.
Printed in the U.S.A. XXXXXXXX-.X-X/XX(X)

THE LEADER IN HIGH PERFORMANCE ANALOG

www.analog.com/flatpanel

R

AIN

CLAMP

ANALOG INTERFACE

A/D

SYNC

PROCESSING

AND CLOCK

GENERATION

HSYNC
VSYNC
COAST
CLAMP

DATACK

HSOUT

VSOUT

SOGOUT

REF BYPASS

SCL

SDA

A

1

MUXES

DIGITAL INTERFACE

RX0+
RX0­RX1+
RX1­RX2+
RX2­RXC+
RXC­R

TERM

DDCSCL
DDCSDA

MCL
MDA

HSYNC

VSYNC

DE

DATACK

DATACK

HSOUT

VSOUT

SOGOUT

DE

8

G

OUTA

8

B

OUTA

8

B

OUTB

SERIAL REGISTER

AND

POWER MANAGEMENT

G

AIN

CLAMP

A/D

B

AIN

CLAMP

A/D

DVI

RECEIVER

HDCP

REF

REFIN

CLINV

CKEXT

FILT

S

CDT

8

B

OUTA

B

OUTB

8

G

OUTA

G

OUTB

8

R

OUTA

R

OUTB

8

R

OUTA

8

R

OUTB

8

G

OUTB

A

0

8

B

OUTA

B

OUTB

8

G

OUTA

G

OUTB

8

R

OUTA

R

OUTB

8

8

8

8

8

8

8

8

8

8

8

8

2

2

2

AD9887A Block Diagram

General

•

Pin-to-pin and software com
patible with the AD9887

•

160-lead MQFP package

•

0°C to 70°C temperature range

•

3.3 V power supply

•

Three-state CMOS outputs
operate from 2.5 V to 3.3 V

•

5.0 V tolerant digital inputs

Analog Interface

•

170 MSPS maximum
conversion rate

•

Programmable
analog bandwidth

•

0.5 V to 1.0 V analog
input range

•

Low-jitter PLL: 500 pS typical
at 170 MSPS

•

Fully integrated
sync processing

•

Midscale clamping

•

4:2:2 output formatting

Digital Interface

•

DVI version 1.0 compatible

•

170 MHz operation

•

Supports High-bandwidth
Digital Content
Protection (HDCP)

•

High skew tolerance of 1 full
input clock

•

Sync detect for “hot plugging”

Applications

•

RGB graphics processing

•

LCD monitors and projectors

•

Plasma display panels

•

HDTV Personal displays