AD9984AKSTZ-170 Ver la hoja de datos (PDF) - Analog Devices

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AD9984AKSTZ-170

500 MSPS Direct Digital Synthesizer

Analog Devices 

AD9984A

TABLE OF CONTENTS

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

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

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

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

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

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

Analog Interface Characteristics ................................................ 3

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

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

Thermal Resistance ...................................................................... 5

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

Pin Configurations and Function Descriptions ........................... 6

Theory of Operation ...................................................................... 11

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

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

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

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

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

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

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

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

Reference Bypassing................................................................... 13

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

Sync Processing........................................................................... 16

Power Management.................................................................... 19

Timing Diagrams........................................................................ 19

Hsync Timing ............................................................................. 20

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

REVISION HISTORY

7/07—Revision 0: Initial Version

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

2-Wire Serial Control Port ............................................................ 22

Data Transfer via Serial Interface............................................. 22

2-Wire Serial Register Map ........................................................... 24

2-Wire Serial Control Registers.................................................... 30

Chip Identification ..................................................................... 30

PLL Divider Control .................................................................. 30

Clock Generator Control .......................................................... 30

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

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

Input Offset ................................................................................. 31

Hsync Control............................................................................. 31

Vsync Control............................................................................. 32

Coast and Clamp Controls........................................................ 33

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

Input and Power Control........................................................... 35

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

Sync Processing .......................................................................... 36

Detection Status.......................................................................... 37

Polarity Status ............................................................................. 37

Hsync Count ............................................................................... 38

Test Registers............................................................................... 38

PCB Layout Recommendations.................................................... 40

Analog Interface Inputs ............................................................. 40

Outputs (Both Data and Clocks).............................................. 40

Digital Inputs .............................................................................. 41

Outline Dimensions ....................................................................... 42

Ordering Guide .......................................................................... 42

Rev. 0 | Page 2 of 44

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