AD9681 datasheet(2/40 Pages) AD

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AD9681

Data Sheet

Rev. A | Page 2 of 40

TABLE OF CONTENTS

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

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

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

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

Product Highlights ........................................................................... 1

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

Functional Block Diagram .............................................................. 3

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

DC Specifications ......................................................................... 4

AC Specifications.......................................................................... 5

Digital Specifications ................................................................... 6

Switching Specifications .............................................................. 7

Timing Specifications .................................................................. 8

Absolute Maximum Ratings.......................................................... 12

Thermal Characteristics ............................................................ 12

ESD Caution................................................................................ 12

Pin Configuration and Function Descriptions........................... 13

Typical Performance Characteristics ........................................... 15

Equivalent Circuits ......................................................................... 18

Theory of Operation ...................................................................... 19

Analog Input Considerations.................................................... 19

Voltage Reference ....................................................................... 20

Clock Input Considerations ...................................................... 21

Power Dissipation and Power-Down Mode ........................... 23

Digital Outputs and Timing ..................................................... 24

Output Test Modes..................................................................... 27

Serial Port Interface (SPI).............................................................. 28

Configuration Using the SPI..................................................... 28

Hardware Interface..................................................................... 29

Configuration Without the SPI ................................................ 29

SPI Accessible Features.............................................................. 29

Memory Map .................................................................................. 30

Reading the Memory Map Register Table............................... 30

Memory Map Register Table..................................................... 31

Memory Map Register Descriptions........................................ 34

Applications Information .............................................................. 37

Design Guidelines ...................................................................... 37

Power and Ground Recommendations ................................... 37

Board Layout Considerations ................................................... 37

Clock Stability Considerations ................................................. 38

Reference Decoupling................................................................ 38

SPI Port ........................................................................................ 38

Outline Dimensions ....................................................................... 39

Ordering Guide .......................................................................... 39

REVISION HISTORY

12/13—Rev. 0 to Rev. A

Changes to Ordering Guide .......................................................... 39

11/13—Revision 0: Initial Version

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