ADXL354 Datasheet, PDF (2/42 Pages) Analog Devices – Hermetic package offers excellent long-term stability

ADXL354/ADXL355
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagrams............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Analog Output for the ADXL354............................................... 3
Digital Output for the ADXL355 ............................................... 4
SPI Digital Interface Characteristics for the ADXL355 .......... 5
I²C Digital Interface Characteristics for the ADXL355........... 6
Absolute Maximum Ratings............................................................ 8
Thermal Resistance ...................................................................... 8
ESD Caution.................................................................................. 8
Pin Configurations and Function Descriptions ........................... 9
Typical Performance Characteristics ........................................... 11
Root Allan Variance (RAV) ADXL355 Characteristics......... 19
Theory of Operation ...................................................................... 20
Analog Output ............................................................................ 20
Digital Output ............................................................................. 21
Axes of Acceleration Sensitivity ............................................... 21
Power Sequencing ...................................................................... 22
Power Supply Description ......................................................... 22
Overrange Protection................................................................. 22
Self Test ........................................................................................ 22
Filter ............................................................................................. 23
Serial Communications ................................................................. 25
SPI Protocol................................................................................. 25
I²C Protocol ................................................................................. 26
Reading Acceleration or Temperature Data from the Interface
....................................................................................................... 26
FIFO ................................................................................................. 27
Interrupts ......................................................................................... 28
DATA_RDY................................................................................. 28
DRDY Pin .................................................................................... 28
FIFO_FULL................................................................................. 28
FIFO_OVR .................................................................................. 28
Activity......................................................................................... 28
NVM_BUSY ............................................................................... 28
External Synchronization and Interpolation .......................... 29
ADXL355 Register Map................................................................. 31
Register Definitions........................................................................ 32
Analog Devices ID Register ...................................................... 32
Analog Devices MEMS ID Register......................................... 32
Device ID Register ..................................................................... 32
Product Revision ID Register ................................................... 32
Status Register............................................................................. 32
FIFO Entries Register ................................................................ 33
Temperature Data Registers...................................................... 33
X-Axis Data Registers ................................................................ 33
Y-Axis Data Registers ................................................................ 34
Z-Axis Data Registers ................................................................ 34
FIFO Access Register ................................................................. 35
X-Axis Offset Trim Registers.................................................... 35
Y-Axis Offset Trim Registers .................................................... 35
Z-Axis Offset Trim Registers .................................................... 36
Activity Enable Register ............................................................ 36
Activity Threshold Registers..................................................... 36
Activity Count Register ............................................................. 36
Filter Settings Register ............................................................... 37
FIFO Samples Register .............................................................. 37
Interrupt Pin (INTx) Function Map Register......................... 37
Data Synchronization ................................................................ 38
I²C Speed, Interrupt Polarity, and Range Register ................. 38
Power Control Register ............................................................. 38
Self Test Register......................................................................... 39
Reset Register.............................................................................. 39
Recommended Soldering Profile ................................................. 40
PCB Footprint Pattern ............................................................... 41
Packaging and Ordering Information ......................................... 42
Outline Dimensions................................................................... 42
Branding Information................................................................ 42
Ordering Guide .......................................................................... 42
REVISION HISTORY
9/2016—Revision 0: Initial Version
Rev. 0 | Page 2 of 42