AD9888

Data Sheet

Rev. C | Page 2 of 36

TABLE OF CONTENTS

Features .............................................................................................. 1

 

Applications....................................................................................... 1

 

Functional Block Diagram .............................................................. 1

 

General Description ......................................................................... 1

 

Revision History ............................................................................... 3

 

Specifications..................................................................................... 4

 

Absolute Maximum Ratings............................................................ 6

 

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

 

ESD Caution.................................................................................. 6

 

Pin Configuration and Function Descriptions............................. 7

 

Design Guide................................................................................... 12

 

General Description................................................................... 12

 

Input Signal Handling................................................................ 12

 

Sync Processing Overview ........................................................ 12

 

HSYNC and VSYNC Inputs...................................................... 12

 

Serial Control Port ..................................................................... 12

 

Output Signal Handling............................................................. 12

 

Clamping ..................................................................................... 12

 

Gain and Offset Control............................................................ 13

 

Sync-on-Green Input ................................................................. 14

 

Clock Generation ....................................................................... 14

 

Alternate Pixel Sampling Mode ................................................ 16

 

Timing.......................................................................................... 17

 

2-Wire Serial Register Map ........................................................... 21

 

2-Wire Serial Control Register Details ........................................ 24

 

Chip Identification ..................................................................... 24

 

PLL Divider Control .................................................................. 24

 

Clock Generator Control .......................................................... 24

 

Clamp Timing............................................................................. 24

 

HSYNC Pulse Width.................................................................. 25

 

Input Gain ................................................................................... 25

 

Input Offset ................................................................................. 25

 

Sync Control ............................................................................... 25

 

Input Control .............................................................................. 26

 

Mode Control 1 .......................................................................... 29

 

2-Wire Serial Control Port ............................................................ 31

 

Data Transfer via Serial Interface............................................. 31

 

Sync Processing .......................................................................... 32

 

Sync Slicer.................................................................................... 33

 

Sync Separator ............................................................................ 33

 

PCB Layout Recommendations.................................................... 34

 

Analog Interface Inputs ............................................................. 34

 

Power Supply Bypassing ............................................................ 34

 

PLL ............................................................................................... 34

 

Outputs (Both Data and Clocks).............................................. 34

 

Digital Inputs .............................................................................. 35

 

Voltage Reference ....................................................................... 35

 

Outline Dimensions ....................................................................... 36

 

Ordering Guide .......................................................................... 36