AD9246-125EB datasheet(3/45 Pages) AD

3 / 45 page

AD9246

Rev. A | Page 2 of 44

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

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

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

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

Timing Diagram ........................................................................... 7

Absolute Maximum Ratings............................................................ 8

Thermal Resistance ...................................................................... 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions............................. 9

Equivalent Circuits ......................................................................... 10

Typical Performance Characteristics ........................................... 11

Theory of Operation ...................................................................... 15

Analog Input Considerations.................................................... 15

Voltage Reference ....................................................................... 17

Clock Input Considerations ...................................................... 18

Jitter Considerations .................................................................. 20

Power Dissipation and Standby Mode..................................... 20

Digital Outputs ........................................................................... 21

Timing ......................................................................................... 22

Serial Port Interface (SPI).............................................................. 23

Configuration Using the SPI..................................................... 23

Hardware Interface..................................................................... 23

Configuration Without the SPI ................................................ 23

Memory Map .................................................................................. 24

Reading the Memory Map Register Table............................... 24

Memory Map Register Table..................................................... 25

Layout Considerations................................................................... 27

Power and Ground Recommendations ................................... 27

CML ............................................................................................. 27

RBIAS........................................................................................... 27

Reference Decoupling................................................................ 27

Evaluation Board ............................................................................ 28

Power Supplies ............................................................................ 28

Input Signals................................................................................ 28

Output Signals ............................................................................ 28

Default Operation and Jumper Selection Settings................. 29

Alternative Clock Configurations............................................ 29

Alternative Analog Input Drive Configuration...................... 29

Schematics................................................................................... 31

Evaluation Board Layouts ......................................................... 36

Bill of Materials........................................................................... 39

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

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

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