AD7767

Rev. 0 | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Specifications .................................................................. 5

Timing Diagrams.......................................................................... 6

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

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

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

Typical Performance Characteristics ........................................... 10

Terminology .................................................................................... 14

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

AD7767/AD7767-1/AD7767-2 Transfer Function................ 15

Converter Operation.................................................................. 15

Analog Input Structure.............................................................. 16

Supply and Reference Voltages ................................................. 16

AD7767 Interface ........................................................................... 17

Initial Power-Up ......................................................................... 17

Reading Data............................................................................... 17

Power-Down, Reset, and Synchronization ............................. 17

Daisy Chaining ............................................................................... 18

Reading Data in Daisy Chain Mode ........................................ 18

Choosing the SCLK Frequency ................................................ 18

Daisy Chain Mode Configuration and Timing Diagrams.... 19

Driving the AD7767....................................................................... 20

Differential Signal Source ......................................................... 20

Single-Ended Signal Source ...................................................... 20

Antialiasing ................................................................................. 21

Power Dissipation....................................................................... 21

VREF+ Input Signal ....................................................................... 22

Multiplexing Analog Input Channels ...................................... 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

REVISION HISTORY

8/07—Revision 0: Initial Version