AD9981SLASHPCB datasheet(2/44 Pages) AD

2 / 44 page

AD9981

Rev. 0 | Page 2 of 44

TABLE OF CONTENTS

Analog Interface Specifications ...................................................... 3

Absolute Maximum Ratings............................................................ 5

Explanation of Test Levels........................................................... 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

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

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

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

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

Hsync and Vsync Inputs............................................................ 11

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

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

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

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

Timing Diagrams........................................................................ 20

Hsync Timing ............................................................................. 21

Coast Timing............................................................................... 21

Output Formatter ....................................................................... 21

Two-Wire Serial Register Map...................................................... 23

Detailed 2-Wire Serial Control Register Descriptions .............. 29

Chip Identification ..................................................................... 29

PLL Divider Control .................................................................. 29

Clock Generator Control .......................................................... 29

Phase Adjust ................................................................................ 30

Input Gain ................................................................................... 30

Input Offset ................................................................................. 30

Hsync Controls ........................................................................... 31

Vsync Controls ........................................................................... 31

Coast and Clamp Controls........................................................ 32

SOG Control ............................................................................... 34

Input and Power Control........................................................... 34

Output Control ........................................................................... 35

Two-Wire Serial Control Port....................................................... 40

Data Transfer via Serial Interface............................................. 40

PCB Layout Recommendations ............................................... 42

PLL ............................................................................................... 42

Outline Dimensions ....................................................................... 44

Ordering Guide .......................................................................... 44

REVISION HISTORY

1/05—Initial Version: Revision 0

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