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PDF ADXL363 Data sheet ( Hoja de datos )
| Número de pieza | ADXL363 | |
| Descripción | Micropower 3-Sensor Combination Including Acceleration and Temperature | |
| Fabricantes | Analog Devices | |
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Data Sheet
Micropower 3-Sensor Combination
Including Acceleration and Temperature
ADXL363
FEATURES
GENERAL DESCRIPTION
Accelerometer, temperature sensor, and provision for 3rd
The ADXL363 is an ultralow power, three-sensor combination
analog sensor input
consisting of a 3-axis MEMS accelerometer, a temperature sensor,
All sensors sampled synchronously
and an on-board ADC input for synchronous conversion of an
Up to 400 Hz output data rate (ODR)
external signal. The entire system consumes less than 2 µA at a
Samples can be synchronized to external trigger
100 Hz output data rate and 270 nA when in motion triggered
Ultralow power
wake-up mode.
1.95 µA at 100 Hz ODR, 2.0 V supply, all sensors on
270 nA at 6 Hz motion activated wake-up mode
10 nA standby current
12-bit resolution for all sensors
Acceleration scale factor down to 1 mg/LSB
Temperature scale factor: 0.065°C/LSB (average)
Built-in features for motion-based system level power savings
Adjustable threshold sleep/wake modes for motion
activation
Autonomous interrupt processing, without need for
The ADXL363 communicates via a serial port interface (SPI)
and always provides 12-bit output resolution for all three
sensors.
The ADXL363 accelerometer provides selectable measurement
ranges of ±2 g, ±4 g, and ±8 g, with a resolution of 1 mg/LSB on
the ±2 g range. Unlike accelerometers that use power duty
cycling to achieve low power consumption, the ADXL363 does
not alias input signals by undersampling; it samples the full
bandwidth of the sensor at all data rates.
microcontroller intervention, to allow the rest of the
system to be turned off completely
Deep embedded FIFO minimizes host processor load
Awake state output enables implementation of
standalone, motion activated switch
Wide supply and I/O voltage ranges: 1.6 V to 3.5 V
Operates off 1.8 V to 3.3 V rails
Power can be derived from coin cell battery
The ADXL363 temperature sensor operates with a scale factor
of 0.065°C (typical). Acceleration and temperature data can be
stored in a 512-sample multimode FIFO buffer, allowing up to
13 sec of data to be stored.
In addition to the accelerometer and temperature sensor, the
ADXL363 also provides access to an internal ADC for
synchronous conversion of an additional analog input.
SPI digital interface
The ADXL363 operates on a wide 1.6 V to 3.5 V supply range,
Small and thin 3 mm × 3.25 mm × 1.06 mm package
and can interface, if necessary, to a host operating on a separate,
APPLICATIONS
Home healthcare devices
lower supply voltage. The ADXL363 is available in a 3 mm ×
3.25 mm × 1.06 mm package.
Wireless sensors
Motion enabled metering devices
FUNCTIONAL BLOCK DIAGRAM
VS VDD I/O
3-AXIS
MEMS
SENSOR
GND
AXIS
ANTIALIASING
DEMODULATORS
FILTERS
TEMPERATURE
SENSOR
Figure 1.
12-BIT
ADC
DIGITAL
FIFO
AND
SPI
INT1
INT2
MOSI
MISO
CS
SCLK
ADC_IN
ADXL363
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
Parameter
Scale Factor Change Due to Temperature3
0 g OFFSET
0 g Output
0 g Offset vs. Temperature3
Normal Operation
Low Noise Mode and Ultralow Noise Mode
NOISE PERFORMANCE
Noise Density
Normal Operation
Low Noise Mode
Ultralow Noise Mode
BANDWIDTH
Low-Pass (Antialiasing) Filter, −3 dB Corner
Output Data Rate (ODR)
SELF TEST
Output Change4
Test Conditions/Comments
Measured in LSB/g
±2 g range
±4 g range
±8 g range
−40°C to +85°C
XOUT, YOUT
ZOUT
XOUT, YOUT
ZOUT
XOUT, YOUT, ZOUT
XOUT, YOUT
ZOUT
XOUT, YOUT
ZOUT
XOUT, YOUT
ZOUT
VS = 3.5 V; XOUT, YOUT
VS = 3.5 V; ZOUT
HALF_BW = 0
HALF_BW = 1
User selectable in eight steps
XOUT
YOUT
ZOUT
1 Cross axis sensitivity is defined as coupling between any two axes.
2 Refer to Figure 29 for current consumption at other bandwidth settings.
3 −40°C to +25°C or +25°C to +85°C.
4 Self test change is defined as the output change in g when self test is asserted.
Min Typ
1000
500
250
0.05
−150 ±35
−250 ±50
±0.5
±0.6
±0.35
550
920
400
550
250
350
175
250
ODR/2
ODR/4
12.5
450
−710
350
580
−580
500
TEMPERATURE SENSOR SPECIFICATIONS
Table 3.
Parameter
BIAS
Average
Standard Deviation
SCALE FACTOR
Average
Standard Deviation
Repeatability
OUTPUT RESOLUTION
Test Conditions/Comments
At 25°C
Min Typ
350
290
0.065
0.0025
±0.5
12
ADXL363
Max Unit
LSB/g
LSB/g
LSB/g
%/°C
+150
+250
mg
mg
mg/°C
mg/°C
mg/°C
µg/√Hz
µg/√Hz
µg/√Hz
µg/√Hz
µg/√Hz
µg/√Hz
µg/√Hz
µg/√Hz
Hz
Hz
400 Hz
710
−450
650
mg
mg
mg
Max Unit
LSB
LSB
°C/LSB
°C/LSB
°C
Bits
Rev. 0 | Page 5 of 48
5 Page 
Data Sheet
10
8
6
4
2
0
–2
–4
–6
–8
–10
–60 –40 –20
0
20 40 60 80 100
TEMPERATURE (°C)
Figure 16. Accelerometer X-Axis Scale Factor Deviation from 25°C vs.
Temperature—16 Parts Soldered to PCB, ODR = 100 Hz, VS = 2 V
10
8
6
4
2
0
–2
–4
–6
–8
–10
–60 –40 –20
0
20 40 60 80 100
TEMPERATURE (°C)
Figure 17. Accelerometer Y-Axis Scale Factor Deviation from 25°C vs.
Temperature—16 Parts Soldered to PCB, ODR = 100 Hz, VS = 2 V
10
8
6
4
2
0
–2
–4
–6
–8
–10
–60 –40 –20
0
20 40 60 80 100
TEMPERATURE (°C)
Figure 18. Accelerometer Z-Axis Scale Factor Deviation from 25°C vs.
Temperature—16 Parts Soldered to PCB, ODR = 100 Hz, VS = 2 V
ADXL363
40
35
30
25
20
15
10
5
0
450 475 500 525 550 575 600 625 650 675 700
SELF TEST DELTA (mg)
Figure 19. Accelerometer X-Axis Self Test Response at 25°C, VS = 2 V
40
35
30
25
20
15
10
5
0
–700 –675 –650 –625 –600 –575 –550 –525 –500 –475 –450
SELF TEST DELTA (mg)
Figure 20. Accelerometer Y-Axis Self Test Response at 25°C, VS = 2 V
40
35
30
25
20
15
10
5
0
350 375 400 425 450 475 500 525 550 575 600 625 650
SELF TEST DELTA (mg)
Figure 21. Accelerometer Z-Axis Self Test Response at 25°C, VS = 2 V
Rev. 0 | Page 11 of 48
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADXL363.PDF ] | |
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