ADXL357 Просмотр технического описания (PDF) - Analog Devices
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ADXL357 Datasheet PDF : 42 Pages
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ADXL356/ADXL357
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagrams............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 3
Specifications..................................................................................... 4
Analog Output for the ADXL356............................................... 4
Digital Output for the ADXL357 ............................................... 5
SPI Digital Interface Characteristics for the ADXL357 .......... 7
I2C Digital Interface Characteristics for the ADXL357........... 8
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
Recommended Soldering Profile ............................................... 9
ESD Caution.................................................................................. 9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characteristics ........................................... 12
Root Allan Variance (RAV) ADXL357 Characteristics......... 20
Theory of Operation ...................................................................... 21
Applications Information .............................................................. 22
Analog Output ............................................................................ 22
Digital Output ............................................................................. 22
Axes of Acceleration Sensitivity ............................................... 23
Power Sequencing ...................................................................... 23
Power Supply Description ......................................................... 23
Overrange Protection................................................................. 23
Self Test ........................................................................................ 23
Filter ............................................................................................. 24
Serial Communications ................................................................. 26
SPI Protocol................................................................................. 26
SPI Bus Sharing........................................................................... 26
I2C Protocol ................................................................................. 27
Reading Acceleration or Temperature Data from the Interface
....................................................................................................... 27
FIFO ................................................................................................. 28
Interrupts ......................................................................................... 29
DATA_RDY................................................................................. 29
Data Sheet
DRDY Pin.................................................................................... 29
FIFO_FULL................................................................................. 29
FIFO_OVR .................................................................................. 29
Activity......................................................................................... 29
External Synchronization and Interpolation .......................... 29
ADXL357 Register Map................................................................. 32
Register Definitions........................................................................ 33
Analog Devices ID Register ...................................................... 33
Analog Devices MEMS ID Register......................................... 33
Device ID Register ..................................................................... 33
Product Revision ID Register ................................................... 33
Status Register............................................................................. 33
FIFO Entries Register ................................................................ 34
Temperature Data Registers...................................................... 34
X-Axis Data Registers ................................................................ 34
Y-Axis Data Registers ................................................................ 35
Z-Axis Data Registers ................................................................ 35
FIFO Access Register ................................................................. 36
X-Axis Offset Trim Registers.................................................... 36
Y-Axis Offset Trim Registers .................................................... 36
Z-Axis Offset Trim Registers .................................................... 37
Activity Enable Register ............................................................ 37
Activity Threshold Registers..................................................... 37
Activity Count Register ............................................................. 37
Filter Settings Register ............................................................... 38
FIFO Samples Register .............................................................. 38
Interrupt Pin (INTx) Function Map Register......................... 38
Data Synchronization ................................................................ 39
I2C Speed, Interrupt Polarity, and Range Register ................. 39
Power Control Register ............................................................. 39
Self Test Register......................................................................... 40
Reset Register.............................................................................. 40
PCB Footprint Pattern ................................................................... 41
Outline Dimensions ....................................................................... 42
Ordering Guide .......................................................................... 42
Rev. A | Page 2 of 42
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