ADXL346(RevC) Просмотр технического описания (PDF) - Analog Devices

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ADXL346
(Rev.:RevC)

3-Axis, ±2 g/±4 g/±8 g/±16 g Ultralow Power Digital Accelerometer

Analog Devices 

ADXL346

TABLE OF CONTENTS

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

Applications....................................................................................... 1

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

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

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

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

Absolute Maximum Ratings............................................................ 5

Thermal Resistance ...................................................................... 5

Package Information .................................................................... 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ...................................................................... 12

Power Sequencing ...................................................................... 12

Power Savings ............................................................................. 13

Serial Communications ................................................................. 14

SPI................................................................................................. 14

I2C ................................................................................................. 17

Interrupts ..................................................................................... 19

FIFO ............................................................................................. 20

Self-Test........................................................................................ 21

Register Map.................................................................................... 22

REVISION HISTORY

6/15—Rev. B to Rev. C

Changes to Features Section and General

Description Section .......................................................................... 1

Change to Figure 36 ....................................................................... 14

Change to FIFO Section ................................................................ 20

5/11—Rev. A to Rev. B

Added Endnote 7 .............................................................................. 3

Added Preventing Bus Traffic Errors Section............................. 14

Changes to Figure 37, Figure 38, Figure 39................................. 15

Changes to Table 12........................................................................ 18

Changes to Using Self-Test Section .............................................. 32

Changes to Axes of Acceleration Sensitivity Section ................. 37

11/10—Rev. 0 to Rev. A

Changes to Ordering Guide .......................................................... 39

5/10—Revision 0: Initial Version

Data Sheet

Register Definitions ................................................................... 23

Applications Information .............................................................. 29

Power Supply Decoupling ......................................................... 29

Mechanical Considerations for Mounting.............................. 29

Tap Detection.............................................................................. 29

Improved Tap Detection............................................................ 30

Tap Sign ....................................................................................... 30

Threshold .................................................................................... 31

Link Mode ................................................................................... 31

Sleep Mode vs. Low Power Mode............................................. 31

Offset Calibration....................................................................... 31

Using Self-Test ............................................................................ 32

Orientation Sensing ................................................................... 32

Data Formatting of Upper Data Rates..................................... 34

Noise Performance ..................................................................... 35

Operation at Voltages Other Than 2.6 V ................................ 36

Offset Performance at Lowest Data Rates............................... 36

Axes of Acceleration Sensitivity ............................................... 37

Layout and Design Recommendations ................................... 38

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

Ordering Guide .......................................................................... 39

Rev. C | Page 2 of 40

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