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ADXL311JE Datasheet(Arkusz danych) 1 Page - Analog Devices

Numer części ADXL311JE
Szczegółowy opis  Low Cost, Ultracompact ±2 g Dual-Axis Accelerometer
Pobierz  12 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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Low Cost, Ultracompact
±2
g Dual-Axis Accelerometer
ADXL311
FEATURES
Low cost
High resolution
Dual-axis accelerometer on a single IC chip
5 mm × 5 mm × 2 mm CLCC package
Low power < 400
µA (typ)
X-axis and Y-axis aligned to within 0.1° (typ)
BW adjustment with a single capacitor
Single-supply operation
High shock survival
APPLICATIONS
Tilt and motion sensing in cost-sensitive applications
Smart handheld devices
Computer security
Input devices
Pedometers and activity monitors
Game controllers
Toys and entertainment products
GENERAL DESCRIPTION
The ADXL311 is a low cost, low power, complete dual-axis
accelerometer with signal conditioned voltage outputs, all on a
single monolithic IC. The ADXL311 is built using the same
proven iMEMS® process used in over 100 million Analog
Devices accelerometers shipped to date, with demonstrated
1 FIT reliability (1 failure per 1 billion device operating hours).
The ADXL311 will measure acceleration with a full-scale
range of ±2
g. The ADXL311 can measure both dynamic
acceleration (e.g., vibration) and static acceleration (e.g.,
gravity). The outputs are analog voltages proportional to
acceleration.
The typical noise floor is 300 µ
g/√Hz allowing signals below
2 m
g (0.1° of inclination) to be resolved in tilt sensing appli-
cations using narrow bandwidths (10 Hz).
The user selects the bandwidth of the accelerometer using
capacitors CX and CY at the XFILT and YFILT pins. Bandwidths
of 1 Hz to 2 kHz may be selected to suit the application.
The ADXL311 is available in a 5 mm × 5 mm × 2 mm
8-terminal hermetic CLCC package
COM
YOUT
XOUT
VDD
CX
ADXL311JE
Y SENSOR
3.0V
SELF TEST
X SENSOR
RFILT
32k
RFILT
32k
200k
CY
CDC
OSCILLATOR
DEMOD
DEMOD
BIAS
Figure 1. Functional Block Diagram
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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2003 Analog Devices, Inc. All rights reserved.




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