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ADXL313WACPZ-RL7 Scheda tecnica(PDF) 1 Page - Analog Devices

Il numero della parte ADXL313WACPZ-RL7
Spiegazioni elettronici  3-Axis, 짹0.5 g/짹1 g/짹2 g/짹4 g Digital Accelerometer
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADXL313WACPZ-RL7 Scheda tecnica(HTML) 1 Page - Analog Devices

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3-Axis, ±0.5 g/±1 g/±2 g/±4 g
Digital Accelerometer
Data Sheet
ADXL313
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
FEATURES
Ultralow power (scales automatically with data rate)
As low as 30 µA in measurement mode (VS = 3.3 V)
As low as 0.1 µA in standby mode (VS = 3.3 V)
Low noise performance
150 μg/√Hz typical for X- and Y-axes
250 μg/√Hz typical for the Z-axis
Embedded, patent pending FIFO technology minimizes host
processor load
User-selectable resolution
Fixed 10-bit resolution for any g range
Fixed 1024 LSB/g sensitivity for any g range
Resolution scales from 10-bit at ±0.5 g to 13-bit at ±4 g
Built-in motion detection functions for activity/inactivity
monitoring
Supply and I/O voltage range: 2.0 V to 3.6 V
SPI (3-wire and 4-wire) and I2C digital interfaces
Flexible interrupt modes mappable to two interrupt pins
Measurement range selectable via serial command
Bandwidth selectable via serial command
Wide temperature range (−40°C to +105°C)
10,000 g shock survival
Pb free/RoHS compliant
Small and thin: 5 mm × 5 mm × 1.45 mm LFCSP package
Qualified for automotive applications
APPLICATIONS
Car alarms
Hill start aid (HSA) systems
Electronic parking brakes
Data recorders (black boxes)
GENERAL DESCRIPTION
The ADXL313 is a small, thin, low power, 3-axis accelerometer
with high resolution (13-bit) measurement up to ±4 g. Digital
output data is formatted as 16-bit twos complement and is
accessible through either a serial port interface (SPI) (3-wire or
4-wire) or I2C digital interface.
The ADXL313 is well suited for car alarm or black box applications.
It measures the static acceleration of gravity in tilt-sensing applica-
tions, as well as dynamic acceleration resulting from motion or
shock. Its high resolution (1024 LSB/g) and low noise (150 μg/√Hz)
enable resolution of inclination changes of as little as 0.1°. A built-
in FIFO facilitates using oversampling techniques to improve
resolution to as little as 0.025° of inclination.
Several built-in sensing functions are provided. Activity and
inactivity sensing detects the presence or absence of motion and
whether the acceleration on any axis exceeds a user-set level.
These functions can be mapped to interrupt output pins. An
integrated 32-level FIFO can be used to store data to minimize
host processor intervention, resulting in reduced system power
consumption.
Low power modes enable intelligent motion-based power
management with threshold sensing and active acceleration
measurement at extremely low power dissipation.
The ADXL313 is supplied in a small, thin 5 mm × 5 mm ×
1.45 mm, 32-lead LFCSP package and is pin compatible with
the ADXL312 accelerometer device.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
3-AXIS
SENSOR
SENSE
ELECTRONICS
DIGITAL
FILTER
ADXL313
POWER
MANAGEMENT
CONTROL
AND
INTERRUPT
LOGIC
SERIAL I/O
INT1
VS
VDD I/O
INT2
SDA/SDI/SDIO
SDO/ALT
ADDRESS
SCL/SCLK
GND
ADC
32-LEVEL
FIFO
CS


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