AD7623

Rev. 0 | Page 2 of 28

TABLE OF CONTENTS

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

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

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

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

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

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

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

Serial Clock Timing Specifications ............................................ 6

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Terminology .................................................................................... 11

Typical Performance Characteristics ........................................... 12

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

Circuit Information.................................................................... 15

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

Transfer Functions...................................................................... 16

Typical Connection Diagram ................................................... 17

Analog Inputs ............................................................................. 17

Driver Amplifier Choice ........................................................... 17

Voltage Reference Input ............................................................ 18

Power Supply............................................................................... 19

Power Dissipation vs. Throughput .......................................... 20

Conversion Control ................................................................... 20

Interfaces.......................................................................................... 21

Digital Interface.......................................................................... 21

Parallel Interface......................................................................... 21

Serial Interface ............................................................................ 22

Master Serial Interface............................................................... 22

Slave Serial Interface .................................................................. 24

Microprocessor Interfacing....................................................... 26

Application ...................................................................................... 27

Layout .......................................................................................... 27

Evaluating the AD7623 Performance ...................................... 27

Outline Dimensions ....................................................................... 28

Ordering Guide .......................................................................... 28

REVISION HISTORY

7/05—Revision 0: Initial Version