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ADXL363BCCZ-RL7 Datasheet(Arkusz danych) 1 Page - Analog Devices

Numer części ADXL363BCCZ-RL7
Szczegółowy opis  Micropower 3-Sensor Combination Including Acceleration and Temperature
Pobierz  48 Pages
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Micropower 3-Sensor Combination
Including Acceleration and Temperature
Data Sheet
ADXL363
Rev. 0
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rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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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
FEATURES
Accelerometer, temperature sensor, and provision for 3rd
analog sensor input
All sensors sampled synchronously
Up to 400 Hz output data rate (ODR)
Samples can be synchronized to external trigger
Ultralow power
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
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
SPI digital interface
Small and thin 3 mm × 3.25 mm × 1.06 mm package
APPLICATIONS
Home healthcare devices
Wireless sensors
Motion enabled metering devices
GENERAL DESCRIPTION
The ADXL363 is an ultralow power, three-sensor combination
consisting of a 3-axis MEMS accelerometer, a temperature sensor,
and an on-board ADC input for synchronous conversion of an
external signal. The entire system consumes less than 2 µA at a
100 Hz output data rate and 270 nA when in motion triggered
wake-up mode.
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.
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.
The ADXL363 operates on a wide 1.6 V to 3.5 V supply range,
and can interface, if necessary, to a host operating on a separate,
lower supply voltage. The ADXL363 is available in a 3 mm ×
3.25 mm × 1.06 mm package.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
VDD I/O
3-AXIS
MEMS
SENSOR
ADC_IN
TEMPERATURE
SENSOR
AXIS
DEMODULATORS
ANTIALIASING
FILTERS
ADXL363
12-BIT
ADC
DIGITAL
FIFO
AND
SPI
INT1
INT2
MOSI
MISO
CS
SCLK
VS
GND




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