AD9271 datasheet(2/58 Pages) AD

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AD9271

Preliminary Technical Data

Rev. PrA | Page 2 of 58

TABLE OF CONTENTS

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

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

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

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

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

Product Highlights ........................................................................... 3

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

AC Specifications.......................................................................... 4

Digital Specifications ................................................................... 8

Switching Specifications .............................................................. 9

ADC Timing Diagrams ................................................................. 10

Absolute Maximum Ratings.......................................................... 11

Thermal Impedance ................................................................... 11

ESD Caution................................................................................ 11

Pin Configuration and Function Descriptions........................... 12

Equivalent Circuits ......................................................................... 15

Typical Performance Characteristics ........................................... 17

Theory of Operation ...................................................................... 20

Ultrasound................................................................................... 20

Channel Overview...................................................................... 21

Input Overdrive .......................................................................... 23

CW Doppler Operation............................................................. 23

TGC Operation........................................................................... 25

A/D Converter ............................................................................ 28

Clock Input Considerations...................................................... 28

Serial Port Interface (SPI).............................................................. 35

Hardware Interface..................................................................... 35

Memory Map .................................................................................. 37

Reading the Memory Map Table.............................................. 37

Reserved Locations .................................................................... 37

Default Values ............................................................................. 37

Logic Levels................................................................................. 37

Evaluation Board ............................................................................ 42

Power Supplies ............................................................................ 42

Input Signals................................................................................ 42

Output Signals ............................................................................ 42

Default Operation and Jumper Selection Settings................. 43

Outline Dimensions ....................................................................... 56

Ordering Guide .......................................................................... 56

REVISION HISTORY

x/07—Revision 0: Initial Version

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