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AD7715AR-5 参数 Datasheet PDF下载

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型号：	AD7715AR-5
PDF下载：	下载PDF文件查看货源
内容描述：	3 V / 5 V ， 450 MUA 16位Σ-Δ型ADC [3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC]
分类和应用：	转换器光电二极管
文件页数/大小：	40 页 / 495 K
品牌：	AD [ ANALOG DEVICES ]

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AD7715

TABLE OF CONTENTS

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

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

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

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

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

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

AD7715-5 ...................................................................................... 3

AD7715-3 ...................................................................................... 5

Timing Characteristics ................................................................ 8

Absolute Maximum Ratings............................................................ 9

ESD Caution.................................................................................. 9

Pin Configuration And Function Descriptions.......................... 10

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

On-Chip Registers .......................................................................... 12

Communications Register (RS1, RS0 = 0, 0) .......................... 13

Setup Register (RS1, RS0 = 0, 1); Power On/Reset Status:

28 Hex .......................................................................................... 14

Test Register (RS1, RS0 = 1, 0).................................................. 15

Data Register (RS1, RS0 = 1, 1) ................................................ 15

Output Noise ................................................................................... 16

AD7715-5 .................................................................................... 16

AD7715-3 .................................................................................... 17

Calibration Sequences.................................................................... 18

Circuit Description......................................................................... 19

Analog Input ............................................................................... 19

Reference Input........................................................................... 21

Digital Filtering........................................................................... 21

Analog Filtering.......................................................................... 23

Calibration................................................................................... 23

Using the AD7715 .......................................................................... 26

Clocking and Oscillator Circuit ............................................... 26

System Synchronization ............................................................ 26

Reset Input .................................................................................. 27

Standby Mode ............................................................................. 27

Accuracy ...................................................................................... 27

Drift Considerations .................................................................. 27

Power Supplies ............................................................................ 28

Digital Interface.......................................................................... 29

Configuring the AD7715............................................................... 31

Microcontroller/Microprocessor Interfacing ............................. 32

AD7715 to 68HC11 Interface ................................................... 32

AD7715 to 8XC51 Interface...................................................... 33

AD7715 to ADSP-2103/ADSP-2105 Interface ....................... 33

Code For Setting Up The AD7715............................................... 34

C Code for Interfacing AD7715 to 68HC11........................... 34

Applications Information .............................................................. 36

Pressure Measurement............................................................... 36

Temperature Measurement ....................................................... 37

Smart Transmitters..................................................................... 38

Outline Dimensions ....................................................................... 39

Ordering Guide .......................................................................... 40

REVISION HISTORY

12/09—Rev. C to Rev. D

Updated Format..................................................................Universal

Changes to Table 5............................................................................ 9

Updated Outline Dimensions ....................................................... 39

2/00—Rev. B to Rev. C

Rev. D | Page 2 of 40

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