AD7634

Data Sheet

Rev. B | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

Terminology .................................................................................... 16

 

Theory of Operation ...................................................................... 17

 

Overview...................................................................................... 17

 

Converter Operation.................................................................. 17

 

Modes of Operation ................................................................... 17

 

Transfer Functions...................................................................... 18

 

Typical Connection Diagram ................................................... 19

 

Analog Inputs.............................................................................. 20

 

Driver Amplifier Choice ........................................................... 21

 

Voltage Reference Input/Output .............................................. 22

 

Power Supplies ............................................................................ 22

 

Conversion Control ................................................................... 23

 

Interfaces.......................................................................................... 24

 

Digital Interface.......................................................................... 24

 

Parallel Interface......................................................................... 24

 

Serial Interface ............................................................................ 25

 

Master Serial Interface............................................................... 25

 

Slave Serial Interface .................................................................. 27

 

Hardware Configuration ........................................................... 29

 

Software Configuration ............................................................. 29

 

Microprocessor Interfacing....................................................... 30

 

Application Information................................................................ 31

 

Layout Guidelines....................................................................... 31

 

Evaluating Performance ............................................................ 31

 

Outline Dimensions ....................................................................... 32

 

Ordering Guide .......................................................................... 32

 

REVISION HISTORY

12/12—Rev. A to Rev. B

Changes to Power Sequencing Section........................................ 23

Updated Outline Dimensions ....................................................... 32

Changes to Ordering Guide .......................................................... 32

3/11—Rev. 0 to Rev. A

Changes to Resolution Parameter, Table 2 .................................... 3

Changes to Figure 4 and Table 6..................................................... 8

Added Exposed Pad Notation to Outline Dimensions ............. 32

1/07—Revision 0: Initial Version