Low Noise, Wide Bandwidth,
MEMS Accelerometer
ADXL1005
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
VDD
STANDBY
ADXL1005
TIMING
GENERATOR
MOD
SENSOR
AMP
OUTPUT
AMPLIFIER
DEMOD
OVERRANGE
DETECTION
XOUT
OR
SELF TEST
VSS
ST
16589-001
Single, in plane axis accelerometer with analog output
Full-scale range: ±100 g
Linear frequency response range: dc to 23 kHz typical
(3 dB point)
Resonant frequency: 42 kHz typical
Ultralow noise density: 75 μg/√Hz
Overrange sensing plus dc coupling allows fast recovery time
Complete electromechanical self test
Sensitivity performance
Sensitivity stability over temperature within ±5%
Linearity to ±0.25% of full-scale range
Cross axis sensitivity: ±1.5% (z-axis acceleration effect on
x-axis, y-axis acceleration effect on x-axis)
Single-supply operation
Output voltage ratiometric to supply
Low power consumption: 1.0 mA typical
Power saving standby operation mode with fast recovery
RoHS compliant
−40°C to +125°C operating temperature range
32-lead, 5 mm × 5 mm × 1.8 mm LFCSP package
Figure 1.
APPLICATIONS
Condition monitoring
Predictive maintenance
Asset health
Test and measurement
Health usage monitoring systems (HUMSs)
Acoustic emissions
GENERAL DESCRIPTION
The ADXL1005 delivers ultralow noise density over an
extended frequency range and is optimized for bearing fault
detection and diagnostics. The ADXL1005 has a typical noise
density of 75 μg/√Hz across the linear frequency range.
Microelectronicmechanical systems (MEMS) accelerometers
have stable and repeatable sensitivity, and are immune to
external shocks of up to 10,000 g.
Rev. 0
The integrated signal conditioning electronics enable such
features as full electrostatic self test (ST) and an overrange (OR)
indicator, useful for embedded applications. With low power
and single-supply operation of 3.0 V to 5.25 V, the ADXL1005
also enables wireless sensing product design. The ADXL1005 is
available in a 5 mm × 5 mm × 1.8 mm LFCSP package, and
operates over the −40°C to +125°C temperature range.
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ADXL1005
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Operating Modes ...........................................................................9
Applications ....................................................................................... 1
Bandwidth ......................................................................................9
Functional Block Diagram .............................................................. 1
Applications Information .............................................................. 10
General Description ......................................................................... 1
Application Circuit ..................................................................... 10
Revision History ............................................................................... 2
On Demand Self Test ................................................................. 10
Specifications..................................................................................... 3
Ratiometric Output Voltage ...................................................... 10
Absolute Maximum Ratings............................................................ 4
Interfacing Analog Output Below 10 kHz .............................. 11
Thermal Resistance ...................................................................... 4
Interfacing Analog Output Beyond 10 kHz ............................ 12
Recommended Soldering Profile ............................................... 4
Overrange .................................................................................... 12
ESD Caution .................................................................................. 4
Mechanical Considerations for Mounting .............................. 12
Pin Configuration and Function Descriptions ............................. 5
Layout and Design Recommendations ................................... 13
Typical Performance Characteristics ............................................. 6
Outline Dimensions ....................................................................... 14
Theory of Operation ........................................................................ 9
Ordering Guide .......................................................................... 14
Mechanical Device Operation .................................................... 9
REVISION HISTORY
4/2018—Revision 0: Initial Version
Rev. 0 | Page 2 of 14
Data Sheet
ADXL1005
SPECIFICATIONS
TA = 25°C, VDD = 5.0 V, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical
specifications may not be guaranteed.
Table 1.
Parameter
SENSOR
Measurement Range
Linearity1
Cross Axis Sensitivity2
SENSITIVITY (RATIOMETRIC TO VDD)
Sensitivity
Sensitivity Change Due to Temperature3
ZERO g OFFSET (RATIOMETRIC TO VDD)
0 g Output Voltage
0 g Output Range over Temperature4
NOISE
Noise Density
1/f Frequency Corner
FREQUENCY RESPONSE
Sensor Resonant Frequency
5% Bandwidth5
3 dB Bandwidth6
SELF TEST
Output Change (Ratiometric to VDD)
Input Voltage Level
High, VIH
Low, VIL
Input Current
OUTPUT AMPLIFIER
Short-Circuit Current
Output Impedance
Maximum Resistive Load
Maximum Capacitive Load7
POWER SUPPLY (VDD)
Operating Voltage Range
Quiescent Supply Current
Standby Current
Standby Recovery Time (Standby to Measure Mode)
Turn On Time8
OPERATING TEMPERATURE RANGE
Test Conditions/Comments
Min
Typ
Max
Unit
Percentage of full-scale
Z-axis acceleration effect on x-axis
Y-axis acceleration effect on x-axis
±100
±0.25
±0.7
±1.5
g
%
%
%
DC
TA = −40°C to +125°C
20
±5
mV/g
%
−40°C to +125°C
VDD/2
9
V
g
75
125
0.1
μg/√Hz
μg/√Hz
Hz
37.7
42
9
23
kHz
kHz
kHz
420
490
mV
100 Hz to 20 kHz
100 Hz to 20 kHz, at 3.0 V supply
ST low to ST high
VDD × 0.7
25
V
V
μA
3
