MEMS Accelerometers. ADXL354 Datasheet

ADXL354 Accelerometers. Datasheet pdf. Equivalent

ADXL354 Datasheet
Recommendation ADXL354 Datasheet
Part ADXL354
Description 3-Axis MEMS Accelerometers
Feature ADXL354; Data Sheet Low Noise, Low Drift, Low Power, 3-Axis MEMS Accelerometers ADXL354/ADXL355 14205-001 .
Manufacture Analog Devices
Datasheet
Download ADXL354 Datasheet




Analog Devices ADXL354
Data Sheet
Low Noise, Low Drift, Low Power,
3-Axis MEMS Accelerometers
ADXL354/ADXL355
FEATURES
Hermetic package offers excellent long-term stability
0 g offset vs. temperature (all axes): 0.15 mg/°C maximum
Ultralow noise density (all axes): 20 μg/√Hz (ADXL354)
Low power, VSUPPLY (LDO enabled)
ADXL354 in measurement mode: 150 μA
ADXL355 in measurement mode: 200 μA
ADXL354/ADXL355 in standby mode: 21 μA
ADXL354 has user adjustable analog output bandwidth
ADXL355 digital output features
Digital serial peripheral interface (SPI)/I2C interfaces
20-bit analog-to-digital converter (ADC)
Data interpolation routine for synchronous sampling
Programmable high- and low-pass digital filters
Electromechanical self test
Integrated temperature sensor
Voltage range options
VSUPPLY with internal regulators: 2.25 V to 3.6 V
V1P8ANA, V1P8DIG with internal low dropout regulator (LDO)
bypassed: 1.8 V typical ± 10%
Operating temperature range: −40°C to +125°C
14-terminal, 6 mm × 6 mm × 2.1 mm, LCC package,
0.26 grams
APPLICATIONS
Inertial measurement units (IMUs)/altitude and heading
reference systems (AHRSs)
Platform stabilization systems
Structural health monitoring
Seismic imaging
Tilt sensing
Robotics
Condition monitoring
GENERAL DESCRIPTION
The analog output ADXL354 and the digital output ADXL355
are low noise density, low 0 g offset drift, low power, 3-axis
accelerometers with selectable measurement ranges. The
ADXL354B supports the ±2 g and ±4 g ranges, the ADXL354C
supports the ±2 g and ±8 g ranges, and the ADXL355 supports
the ±2.048 g, ±4.096 g, and ±8.192 g ranges. The ADXL354/
ADXL355 offer industry leading noise, minimal offset drift over
temperature, and long term stability enabling precision
applications with minimal calibration.
FUNCTIONAL BLOCK DIAGRAMS
V1P8ANA
V1P8DIG
RANGE
VSUPP LY
XOUT
YOUT
OUT
TEMP
LDO
LDO
POWER
MANAGEMENT
ANALOG
FILTER
TEMP
SENSOR
3-AXIS
SENSOR
ADXL354
CONTROL
LOGIC
ST1
ST2
STBY
VDDIO
VSSIO
VSS
Figure 1. ADXL354 Functional Block Diagram
V1P8ANA
V1P8DIG
VDDIO
VSUPP LY
LDO
POWER
LDO ADXL355 MANAGEMENT
3-AXIS
SENSOR
ANALOG
FILTER
TEMP
SENSOR
ADC
ADC
ADC
ADC
DIGITAL
FILTER
CONTROL
LOGIC
FIFO
SERIAL
I/O
INT1
INT2
DRDY
CS/SCL
SCLK/VSSIO
MOSI/SDA
MISO/ASEL
VSSIO
VSS
Figure 2. ADXL355 Functional Block Diagram
Highly integrated in a compact form factor, the low power
ADXL355 is ideal in an Internet of Things (IoT) sensor node
and other wireless product designs.
The ADXL355 multifunction pin names may be referenced by
their relevant function only for either the SPI or I2C interfaces.
1 Protected by U.S. Patents 8,472,270; 9,041,462; 8,665,627; 8,917,099; 6,892,576; 9,297,825; and 7,956,621.
Rev. A
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Tel: 781.329.4700 ©2016–2018 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com



Analog Devices ADXL354
ADXL354/ADXL355
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 
NVM_BUSY ............................................................................... 28 
Applications....................................................................................... 1 
External Synchronization and Interpolation .......................... 29 
Functional Block Diagrams............................................................. 1 
ADXL355 Register Map................................................................. 31 
General Description ......................................................................... 1 
Register Definitions........................................................................ 32 
Revision History ............................................................................... 2 
Analog Devices ID Register ...................................................... 32 
Specifications..................................................................................... 3 
Analog Devices MEMS ID Register......................................... 32 
Analog Output for the ADXL354............................................... 3 
Device ID Register ..................................................................... 32 
Digital Output for the ADXL355 ............................................... 4 
Product Revision ID Register ................................................... 32 
SPI Digital Interface Characteristics for the ADXL355 .......... 5 
Status Register............................................................................. 32 
I2C Digital Interface Characteristics for the ADXL355........... 6 
FIFO Entries Register ................................................................ 33 
Absolute Maximum Ratings............................................................ 8 
Temperature Data Registers...................................................... 33 
Thermal Resistance ...................................................................... 8 
X-Axis Data Registers ................................................................ 33 
ESD Caution.................................................................................. 8 
Y-Axis Data Registers ................................................................ 34 
Pin Configurations and Function Descriptions ........................... 9 
Z-Axis Data Registers ................................................................ 34 
Typical Performance Characteristics ........................................... 11 
FIFO Access Register ................................................................. 35 
Root Allan Variance (RAV) ADXL355 Characteristics......... 19 
X-Axis Offset Trim Registers.................................................... 35 
Theory of Operation ...................................................................... 20 
Y-Axis Offset Trim Registers .................................................... 35 
Analog Output ............................................................................ 20 
Z-Axis Offset Trim Registers .................................................... 36 
Digital Output............................................................................. 21 
Activity Enable Register ............................................................ 36 
Axes of Acceleration Sensitivity ............................................... 21 
Activity Threshold Registers..................................................... 36 
Power Sequencing ...................................................................... 22 
Activity Count Register ............................................................. 36 
Power Supply Description ......................................................... 22 
Filter Settings Register ............................................................... 37 
Overrange Protection................................................................. 22 
FIFO Samples Register .............................................................. 37 
Self Test ........................................................................................ 22 
Interrupt Pin (INTx) Function Map Register......................... 37 
Filter ............................................................................................. 23 
Data Synchronization ................................................................ 38 
Serial Communications ................................................................. 25 
I2C Speed, Interrupt Polarity, and Range Register ................. 38 
SPI Protocol................................................................................. 25 
Power Control Register ............................................................. 38 
I2C Protocol ................................................................................. 26 
Self Test Register......................................................................... 39 
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 
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 
Activity......................................................................................... 28 
REVISION HISTORY
4/2018—Rev. 0 to Rev.
Added Vibration Parameter, Table 5 .............................................. 8
Changes to Overrange Protection Section .................................. 22
8/2016—Revision 0: Initial Version
Rev. A | Page 2 of 42



Analog Devices ADXL354
Data Sheet
ADXL354/ADXL355
SPECIFICATIONS
ANALOG OUTPUT FOR THE ADXL354
TA = 25°C, VSUPPLY = 3.3 V, x-axis acceleration and y-axis acceleration = 0 g, and z-axis acceleration = 1 g, unless otherwise noted.
Table 1.
Parameter
SENSOR INPUT
Output Full-Scale Range (FSR)
Resonant Frequency1
Nonlinearity
Cross Axis Sensitivity
SENSITIVITY
Sensitivity at XOUT, YOUT, ZOUT
Sensitivity Change due to Temperature
0 g OFFSET
0 g Output for XOUT, YOUT, ZOUT
0 g Offset vs. Temperature (X-Axis, Y-Axis, and Z-Axis)2
Repeatability3
Vibration Rectification Error (VRE)4
NOISE DENSITY
X-Axis, Y-Axis, and Z-Axis
Velocity Random Walk
BANDWIDTH
Internal Low-Pass Filter Frequency
SELF TEST
Output Change
X-Axis
Y-Axis
Z-Axis
POWER SUPPLY
Voltage Range
VSUPPLY5
VDDIO
V1P8ANA, V1P8DIG with Internal Low Dropout
Regulator (LDO) Bypassed
Current
Measurement Mode
VSUPPLY (LDO Enabled)
V1P8ANA (LDO Disabled)
V1P8DIG (LDO Disabled)
Standby Mode
VSUPPLY (LDO Enabled)
V1P8ANA (LDO Disabled)
V1P8DIG (LDO Disabled)
Turn On Time6
Test Conditions/Comments
Each axis
ADXL354B, supports two ranges
ADXL354C, supports two ranges
±2 g
Ratiometric to V1P8ANA
±2 g
±4 g
±8 g
−40°C to +125°C
Each axis, ±2 g
Referred to V1P8ANA/2
−40°C to +125°C
X-axis and y-axis
Z-axis
±2 g range, in a 1 g orientation,
offset due to 2.5 g rms vibration
±2 g
X-axis and y-axis
Z-axis
Min Typ Max
±2/±4
±2/±8
2.4
0.1
1
368 400 432
184 200 216
92 100 108
±0.01
−75
−0.15
±25
±0.1
±3.5
±9
<0.4
+75
+0.15
20
9
13
Fixed frequency, 50% response
attenuation
1500
0.3
0.3
1.5
VSUPPLY = 0 V
2.25
V1P8DIG
1.62
2.5
2.5
1.8
3.6
3.6
1.98
2 g range
Power-off to standby
150
138
12
21
7
10
<10
<10
Unit
g
g
kHz
%
%
mV/g
mV/g
mV/g
%/°C
mg
mg/°C
mg
mg
g
μg/√Hz
μm/sec/Hr
μm/sec/Hr
Hz
g
g
g
V
V
V
μA
μA
μA
μA
μA
μA
ms
ms
Rev. A | Page 3 of 42







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