AD7265

Data Sheet

Rev. B | Page 2 of 28

TABLE OF CONTENTS

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

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

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

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

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

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

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

Absolute Maximum Ratings......................................................6

ESD Caution..........................................................................6

Pin Configurations and Function Descriptions.........................7

Typical Performance Characteristics .........................................9

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

Theory of Operation................................................................13

Circuit Information..............................................................13

Converter Operation............................................................13

Analog Input Structure ........................................................13

Analog Inputs ......................................................................14

Analog Input Selection.........................................................17

Output Coding.....................................................................17

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

Digital Inputs.......................................................................18

VDRIVE ...................................................................................18

Modes of Operation................................................................19

Normal Mode......................................................................19

Partial Power-Down Mode..................................................19

Full Power-Down Mode ......................................................20

Power-Up Times..................................................................21

Power vs. Throughput Rate..................................................21

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

Microprocessor Interfacing.....................................................23

AD7265 to ADSP-218x........................................................23

AD7265 to ADSP-BF53x.....................................................24

AD7265 to TMS320C541.....................................................24

AD7265 to DSP563xx..........................................................25

Application Hints....................................................................26

Grounding and Layout........................................................26

PCB Design Guidelines for LFCSP......................................26

Evaluating the AD7265 Performance...................................26

Outline Dimensions................................................................27

Ordering Guide ...................................................................27

REVISION HISTORY

1/2017—Rev. A to Rev. B

Changed CP-32-2 to CP-32-7...................................Throughout

Changes to Figure 2...................................................................7

Updated Outline Dimensions..................................................27

Changes to Ordering Guide.....................................................27

11/2006—Rev. 0 to Rev. A

Changes to Format........................................................Universal

Changes to Reference Input/Output Section..............................4

Changes to Table 4.....................................................................7

Changes to Terminology Section.............................................11

Changes to Figure 24 and Differential Mode Section...............15

Changes to Figure 29...............................................................16

Changes to AD7265 to ADSP-BF53x Section..........................24

Updated Outline Dimensions..................................................27

Changes to Ordering Guide.....................................................27

4/2005—Revision 0: Initial Version