AD7264

Rev. A | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

Timing Specifications .................................................................. 6

 

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

 

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

 

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

 

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

 

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

 

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

 

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

 

Comparators................................................................................ 15

 

Operation..................................................................................... 15

 

Analog Inputs.............................................................................. 15

 

VDRIVE ............................................................................................ 16

 

Reference ..................................................................................... 16

 

Typical Connection Diagrams.................................................. 17

 

Application Details..................................................................... 19

 

Modes of Operation ....................................................................... 20

 

Pin Driven Mode........................................................................ 20

 

Gain Selection............................................................................. 20

 

Power-Down Modes .................................................................. 20

 

Control Register ......................................................................... 21

 

On-Chip Registers...................................................................... 22

 

Serial Interface ................................................................................ 23

 

Calibration....................................................................................... 25

 

Internal Offset Calibration........................................................ 25

 

Adjusting the Offset Calibration Register............................... 26

 

System Gain Calibration............................................................ 26

 

Application Hints ........................................................................... 27

 

Grounding and Layout .............................................................. 27

 

PCB Design Guidelines for LFCSP .......................................... 27

 

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

 

Ordering Guide .......................................................................... 29

 

REVISION HISTORY

7/08—Rev. 0 to Rev. A

Added AD7264-5................................................................Universal

Added LQFP Package.........................................................Universal

Changes to Figure 1.......................................................................... 1

Changes to Table 3............................................................................ 7

Changes to Pin Configuration and Function

Description Section .......................................................................... 8

Changes to Figure 29...................................................................... 19

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

Changes to Ordering Guide .......................................................... 29

5/08—Revision 0: Initial Version