AD7265(RevB) 查看數據表（PDF） - Analog Devices

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AD7265
(Rev.:RevB)

Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC

Analog Devices 

AD7265

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

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

Data Sheet

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

Rev. B | Page 2 of 28

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