ANALOG DEVICES ADXL001 Service Manual
High Performance,
V
FEATURES
High performance accelerometer
±70 g, ±250 g, and ±500 g wideband ranges available
22 kHz resonant frequency structure
High linearity: 0.2% of full scale
Low noise: 4 mg/√Hz
Sensitive axis in the plane of the chip
Frequency response down to dc
Full differential signal processing
High resistance to EMI/RFI
Complete electromechanical self-test
Output ratiometric to supply
Velocity preservation during acceleration input overload
Low power consumption: 2.5 mA typical
8-terminal, hermetic ceramic, LCC package
APPLICATIONS
Vibration monitoring
Shock detection
Sports diagnostic equipment
Medical instrumentation
Industrial monitoring
GENERAL DESCRIPTION
The ADXL001 is a major advance over previous generations of
accelerometers providing high performance and wide bandwidth.
This part is ideal for industrial, medical, and military applications
where wide bandwidth, small size, low power, and robust
performance are essential.
FUNCTIONAL BLOCK DIAGRAM
S
V
DD
TIMING
V
DD2
GENERATOR
Wide Bandwidth Accelerometer
ADXL001
Using the Analog Devices, Inc. proprietary fifth-generation
iMEMs® process enables the ADXL001 to provide the desired
dynamic range that extends from ±70 g to ±500 g in combination with 22 kHz of bandwidth. The accelerometer output
channel passes through a wide bandwidth differential-to-singleended converter, which allows access to the full mechanical
performance of the sensor.
The part can operate on voltage supplies from 3.3 V to 5 V.
The ADXL001 also has a self-test (ST) pin that can be asserted to
verify the full electromechanical signal chain for the accelerometer
channel.
The ADXL001 is available in the industry-standard 8-terminal
LCC and is rated to work over the extended industrial temperature
range (−40°C to +125°C).
15
12
9
6
3
0
–3
RESPONSE (d B)
–6
–9
–12
–15
1 10 100 1k 10k 100k
Figure 1. Sensor Frequency Response
ADXL001
FREQUENCY (Hz)
07510-102
DIFFERENTIAL
MOD
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
SENSOR
SELF-TEST
ST
DEMOD
AMP
COM
Figure 2.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2010 Analog Devices, Inc. All rights reserved.
OUTPUT
AMPLIFIER
X
OUT
07510-001
ADXL001
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Specifications for 3.3 V Operation ............................................. 3
Specifications for 5 V Operation ................................................ 4
Recommended Soldering Profile ............................................... 5
Absolute Maximum Ratings ............................................................ 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 11
Design Principles ........................................................................ 11
Mechanical Sensor ..................................................................... 11
Applications Information .............................................................. 12
Application Circuit ..................................................................... 12
Self-Test ....................................................................................... 12
Acceleration Sensitive Axis ....................................................... 12
Operating Voltages Other Than 5 V ........................................ 12
Layout, Grounding, and Bypassing Considerations .................. 13
Clock Frequency Supply Response .......................................... 13
Power Supply Decoupling ......................................................... 13
Electromagnetic Interference ................................................... 13
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
2/10—Rev. 0 to Rev. A
Added -250 and -500 models ............................................ Universal
Changes to Table 1 ............................................................................ 3
Changes to Table 2 ............................................................................ 4
Added Figure 9 through Figure 18 ................................................. 8
Changes to Ordering Guide .......................................................... 14
1/09—Revision 0: Initial Version
Rev. A | Page 2 of 16
ADXL001
SPECIFICATIONS
SPECIFICATIONS FOR 3.3 V OPERATION
TA = −40°C to +125°C, VS = 3.3 V ± 5% dc, acceleration = 0 g, unless otherwise noted.
Table 1.
ADXL001-70 ADXL001-250 ADXL001-500
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
SENSOR
Nonlinearity 0.2 2 0.2 2 0.2 2 %
Cross-Axis Sensitivity
Resonant Frequency 22 22 22 kHz
Quality Factor 2.5 2.5 2.5
SENSITIVITY
Full-Scale Range I
Sensitivity 100 Hz 16.0 4.4 2.2 mV/g
OFFSET Ratiometric
Zero-g Output 1.35 1.65 1.95 1.35 1.65 1.95 1.35 1.65 1.95 V
NOISE
Noise 10 Hz to 400 Hz 85 95 105 mg rms
Noise Density 10 Hz to 400 Hz 3.3 3.65 4.25 mg/√Hz
FREQUENCY RESPONSE
−3 dB Frequency 32 32 32 kHz
−3 dB Frequency Drift
Over Temperature
SELF-TEST
Output Voltage Change 400 125 62 mV
Logic Input High 2.1 2.1 2.1 V
Logic Input Low 0.66 0.66 0.66 V
Input Resistance To ground 30 50 30 50 30 50 kΩ
OUTPUT AMPLIFIER
Output Swing I
Capacitive Load 1000 1000 1000 pF
PSRR (CFSR) DC to 1 MHz 0.9 0.9 0.9 V/V
POWER SUPPLY (VS)
Functional Range 3.135 6 3.135 6 3.135 6 V
I
2.5 5 2.5 5 2.5 5 mA
SUPPLY
Turn-On Time 10 10 10 ms
Includes package
alignment
≤ ±100 μA −70 +70 −250 +250 −500 +500
OUT
2 2 2 %
= ±100 μA 0.2 VS − 0.2 0.2 VS − 0.2 0.2 VS − 0.2 V
OUT
2 2 2 %
g
Rev. A | Page 3 of 16
ADXL001
SPECIFICATIONS FOR 5 V OPERATION
TA = -40°C to +125°C, VS = 5 V ± 5% dc, acceleration = 0 g, unless otherwise noted.
Table 2.
ADXL001-70 ADXL001-250 ADXL001-500
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max Unit
SENSOR
Nonlinearity 0.2 2 0.2 2 0.2 2 %
Cross-Axis Sensitivity
Includes package
alignment
Resonant Frequency 22 22 22 kHz
Quality Factor 2.5 2.5 2.5
SENSITIVITY
Full-Scale Range I
≤ ±100 μA −70 +70 −250 +250 −500 +500
OUT
Sensitivity 100 Hz 24.2 6.7 3.3 mV/g
OFFSET Ratiometric
Zero-g Output 2.00 2.5 3.00 2.00 2.5 3.00 2.00 2.5 3.00 V
NOISE
Noise 10 Hz to 400 Hz 55 60 70 mg rms
Noise Density 10 Hz to 400 Hz 2.15 2.35 2.76 mg/√Hz
FREQUENCY RESPONSE
−3 dB Frequency 32 32 32 kHz
−3 dB Frequency Drift
2 2 2 %
Over Temperature
SELF-TEST
Output Voltage Change 1435 445 217 mV
Logic Input High 3.3 3.3 3.3 V
Logic Input Low 0.66 0.66 0.66 V
Input Resistance To ground 30 50 30 50 30 50 kΩ
OUTPUT AMPLIFIER
Output Swing I
= ±100 μA 0.2 VS − 0.2 0.2 VS − 0.2 0.2 VS − 0.2 V
OUT
Capacitive Load 1000 1000 1000 pF
PSRR (CFSR) DC to 1 MHz 0.9 0.9 0.9 V/V
POWER SUPPLY (VS)
Functional Range 3.135 6 3.135 6 3.135 6 V
I
4.5 9 4.5 9 4.5 9 mA
SUPPLY
Turn-On Time 10 10 10 ms
2 2 2 %
g
Rev. A | Page 4 of 16
ADXL001
RECOMMENDED SOLDERING PROFILE
Table 3. Soldering Profile Parameters
Profile Feature Sn63/Pb37 Pb-Free
Average Ramp Rate (TL to TP) 3°C/sec maximum 3°C/sec maximum
Preheat
Minimum Temperature (T
Maximum Temperature (T
Time (T
T
SMAX
to T
SMIN
), ts 60 sec to 120 sec 60 sec to 150 sec
SMAX
to TL
Ramp-Up Rate 3°C/sec 3°C/sec
Time Maintained Above Liquidous (tL)
Liquidous Temperature (TL) 183°C 217°C
Liquidous Time (tL) 60 sec to 150 sec 60 sec to 150 sec
Peak Temperature (TP) 240°C + 0°C/−5°C 260°C + 0°C/−5°C
Time Within 5°C of Actual Peak Temperature (tP) 10 sec to 30 sec 20 sec to 40 sec
Ramp-Down Rate 6°C/sec maximum 6°C/sec maximum
Time 25°C to Peak Temperature (t
Soldering Profile Diagram
) 100°C 150°C
SMIN
) 150°C 200°C
SMAX
) 6 minute maximum 8 minute maximum
PEAK
CRITICAL ZONE
TO T
t
T
P
T
L
T
SMAX
RAMP-UP
P
T
L
P
t
L
T
SMIN
t
TEMPERATURE (T)
S
PREHEAT
t
PEAK
TIME (t)
RAMP-DOWN
07510-022
Figure 3. Soldering Profile Diagram
Rev. A | Page 5 of 16
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