AD9985

Rev. 0 | Page 2 of 32

TABLE OF CONTENTS

Revision History ........................................................................... 2

Specifications..................................................................................... 3

Explanation of Test Levels........................................................... 6

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Design Guide................................................................................... 11

General Description................................................................... 11

Digital Inputs .............................................................................. 11

Input Signal Handling................................................................ 11

Hsync, Vsync Inputs................................................................... 11

Serial Control Port ..................................................................... 11

Output Signal Handling............................................................. 11

Clamping ..................................................................................... 11

RGB Clamping........................................................................ 11

YUV Clamping ....................................................................... 12

Gain and Offset Control............................................................ 12

Auto Offset .............................................................................. 12

Sync-on-Green............................................................................ 13

Clock Generation ....................................................................... 13

Power Management.................................................................... 14

Timing.......................................................................................... 15

Hsync Timing ............................................................................. 15

Coast Timing............................................................................... 15

2-Wire Serial Register Map ....................................................... 16

2-Wire Serial Control Register Detail Chip Identification ... 19

PLL Divider Control .................................................................. 19

Clock Generator Control .......................................................... 19

Clamp Timing............................................................................. 20

Hsync Pulsewidth....................................................................... 20

Input Gain ................................................................................... 20

Input Offset ................................................................................. 20

Mode Control 1 .......................................................................... 21

2-Wire Serial Control Port........................................................ 26

Data Transfer via Serial Interface............................................. 26

Sync Slicer.................................................................................... 28

Sync Separator ............................................................................ 28

PCB Layout Recommendations ............................................... 29

Analog Interface Inputs ............................................................. 29

Power Supply Bypassing ............................................................ 29

PLL ............................................................................................... 30

Outputs (Both Data and Clocks).............................................. 30

Digital Inputs .............................................................................. 30

Voltage Reference ....................................................................... 30

Outline Dimensions ....................................................................... 31

Ordering GuIde .......................................................................... 31

REVISION HISTORY

5/04—Revision 0: Initial Version