AD7262

Data Sheet

Rev. B | 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

 

Timing Diagram ........................................................................... 6

 

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

 

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

 

Pin Configurations 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 ..................................................................................... 17

 

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

 

Application Details..................................................................... 20

 

Modes of Operation ....................................................................... 22

 

Pin-Driven Mode ....................................................................... 22

 

Gain Selection............................................................................. 22

 

Power-Down Modes .................................................................. 22

 

Control Register ......................................................................... 23

 

On-Chip Registers...................................................................... 24

 

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

 

Calibration....................................................................................... 27

 

Internal Offset Calibration........................................................ 27

 

Adjusting the Offset Calibration Registers................................. 28

 

System Gain Calibration............................................................ 28

 

Microprocessor Interfacing........................................................... 29

 

AD7262/AD7262-5 to ADSP-BF531 ....................................... 29

 

Application Hints ........................................................................... 30

 

Grounding and Layout .............................................................. 30

 

PCB Design Guidelines for LFCSP .......................................... 30

 

Outline Dimensions ....................................................................... 31

 

Ordering Guide .......................................................................... 31

 

REVISION HISTORY

11/2016—Rev. A to Rev. B

Change to Figure 4 ........................................................................... 8

Change to Pin 31, 32 Description, Table 4 .................................... 9

Changes to Serial Interface Section.............................................. 25

Changes to Figure 34 and Figure 34 Caption ............................. 26

Updated Outline Dimensions ....................................................... 31

Changes to Ordering Guide .......................................................... 31

8/2015—Rev. 0 to Rev. A

Changed ADSP-BF53x to ADSP-BF531..................... Throughout

Changes to Table 4.............................................................................9

Change to Serial Interface Section ............................................... 25

Changes to Figure 34 and Figure 34 Caption ............................. 26

Change to Microprocessor Interfacing Section and Figure 37. 29

Changes to AD7262/AD7262-5 to ADSP-BF531 Section......... 29

Updated Outline Dimensions....................................................... 31

7/2008—Revision 0: Initial Version