ADXL346ACCZ(RevPrC) 데이터 시트보기 (PDF) - Analog Devices

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ADXL346ACCZ
(Rev.:RevPrC)

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

Analog Devices 

ADXL346

Preliminary Technical Data

TABLE OF CONTENTS

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

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

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

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

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

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

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

Theory of Operation ...................................................................... 10

Power Sequencing ...................................................................... 10

Power Savings.............................................................................. 10

Serial Communications ................................................................. 12

SPI................................................................................................. 12

I2C ................................................................................................. 14

Interrupts ..................................................................................... 16

FIFO ............................................................................................. 16

Self-Test ....................................................................................... 17

Register Map ................................................................................... 19

Register Definitions ................................................................... 20

Applications Information .............................................................. 25

Power Supply Decoupling ......................................................... 25

Mechanical Considerations for Mounting.............................. 25

Tap Detection.............................................................................. 25

Improved Tap Detection............................................................ 26

Tap Sign ....................................................................................... 26

Threshold .................................................................................... 27

Link Mode ................................................................................... 27

Sleep Mode vs. Low Power Mode............................................. 27

Using Self-Test ............................................................................ 27

Orientation Sensing ................................................................... 28

Axes of Acceleration Sensitivity ............................................... 29

Layout and Design Recommendations ................................... 30

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

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

REVISION HISTORY

6/09—Revision PrC: Updated Specifications and functional descriptions of Orientation, Tap Sign and Improved Tap.

4/09—Revision PrB: Updated Absolute Maximum Ratings table to reflect correct values for the ADXL346.

3/09—Revision PrA: Initial Version

Rev. PrC | Page 2 of 32

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