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PDF ADXL354 Data sheet ( Hoja de datos )
| Número de pieza | ADXL354 | |
| Descripción | 3-Axis MEMS Accelerometers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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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. 0
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADXL354/ADXL355
Parameter
SELF TEST
Output Change
X-Axis
Y-Axis
Z-Axis
POWER SUPPLY
Voltage Range
VSUPPLY Operating4
VDDIO
V1P8ANA and V1P8DIG with Internal 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 Time5
TEMPERATURE SENSOR
Output at 25°C
Scale Factor
TEMPERATURE
Operating Temperature Range
Test Conditions/Comments
VSUPPLY = 0 V
2 g range
Power-off to standby
Min Typ Max Unit
0.3 g
0.3 g
1.5 g
2.25
V1P8DIG
1.62
2.5
2.5
1.8
3.6 V
3.6 V
1.98 V
200 µA
160 µA
35.5 µA
21 µA
7 µA
10 µA
<10 ms
<10 ms
1852
−9.05
LSB
LSB/°C
−40
+125
°C
1 The temperature change is −40°C to +25°C or +25°C to +125°C.
2 Repeatability is predicted for a 10 year life and includes shifts due to the HTOL (TA = 150°C, VSUPPLY = 3.6 V, and 1000 hours), temperature cycling (−55°C to +125°C and
1000 cycles), velocity random walk, broadband noise, and temperature hysteresis.
3 The VRE measurement is the shift in dc offset while the device is subject to 2.5 g rms random vibration from 50 Hz to 2 kHz. The DUT is configured for the ±2 g range
and an output data rate of 4 kHz. The VRE scales with the range setting.
4 When V1P8ANA and V1P8DIG are generated internally, VSUPPLY is valid. To disable the LDO and drive V1P8ANA and V1P8DIG externally, connect VSUPPLY to VSS.
5 Standby to measurement mode; valid when the output is within 1 mg of final value.
SPI DIGITAL INTERFACE CHARACTERISTICS FOR THE ADXL355
Note that multifunction pin names may be referenced by their relevant function only.
Table 3.
Parameter
DC INPUT LEVELS
Input Voltage
Low Level
High Level
Input Current
Low Level
High Level
DC OUTPUT LEVELS
Output Voltage
Low Level
High Level
Output Current
Low Level
High Level
Symbol
Test Conditions/Comments
VIL
VIH
IIL VIN = 0 V
IIH VIN = VDDIO
VOL IOL = IOL, MIN
VOH IOH = IOH, MAX
IOL VOL = VOL, MAX
IOH VOH = VOH, MIN
Min
0.7 × VDDIO
−0.1
0.8 × VDDIO
−10
Typ Max
0.3 × VDDIO
0.1
0.2 × VDDIO
4
Unit
V
V
µA
µA
V
V
mA
mA
Rev. 0 | Page 5 of 42
5 Page 
Data Sheet
ADXL354/ADXL355
TYPICAL PERFORMANCE CHARACTERISTICS
All figures include data for multiple devices and multiple lots, and they were taken in the ±2 g range, unless otherwise noted.
10 1
1
0.1
0.1
0.01
10
100 1000
FREQUENCY (Hz)
Figure 7. ADXL354 Frequency Response for X-Axis
10
1
0.1
0.01
10
100 1000
FREQUENCY (Hz)
Figure 10. ADXL355 Normalized Frequency Response for X-Axis at 4 kHz ODR
1
0.1
0.01
10
100 1000
FREQUENCY (Hz)
Figure 8. ADXL354 Frequency Response for Y-Axis
10
0.01
10
100 1000
FREQUENCY (Hz)
Figure 11. ADXL355 Normalized Frequency Response for Y-Axis at 4 kHz ODR
1
1
0.1
0.1
10
100 1000
FREQUENCY (Hz)
Figure 9. ADXL354 Frequency Response for Z-Axis
0.01
10
100 1000
FREQUENCY (Hz)
Figure 12. ADXL355 Normalized Frequency Response for Z-Axis at 4 kHz ODR
Rev. 0 | Page 11 of 42
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADXL354.PDF ] | |
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