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ADXL321JCP Datasheet(Arkusz danych) 1 Page - Analog Devices

Numer części ADXL321JCP
Szczegółowy opis  Small and Thin 18 g Accelerometer
Pobierz  16 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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Small and Thin ±18 g Accelerometer
ADXL321
Rev. 0
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 owners.
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
© 2004 Analog Devices, Inc. All rights reserved.
FEATURES
Small and thin
4 mm × 4 mm × 1.45 mm LFCSP package
3 mg resolution at 50 Hz
Wide supply voltage range: 2.4 V to 6 V
Low power: 350 µA at VS = 2.4 V (typ)
Good zero g bias stability
Good sensitivity accuracy
X-axis and Y-axis aligned to within 0.1° (typ)
BW adjustment with a single capacitor
Single-supply operation
10,000 g shock survival
Compatible with Sn/Pb and Pb-free solder processes
APPLICATIONS
Vibration monitoring and compensation
Abuse event detection
Sports equipment
GENERAL DESCRIPTION
The ADXL321 is a small and thin, low power, complete dual-
axis accelerometer with signal conditioned voltage outputs,
which is all on a single monolithic IC. The product measures
acceleration with a full-scale range of ±18 g (typical). It can also
measure both dynamic acceleration (vibration) and static
acceleration (gravity).
The ADXL321’s typical noise floor is 320 µg/√Hz, allowing
signals below 3 mg to be resolved in tilt-sensing applications
using narrow bandwidths (<50 Hz).
The user selects the bandwidth of the accelerometer using
capacitors CX and CY at the XOUT and YOUT pins. Bandwidths of
0.5 Hz to 2.5 kHz may be selected to suit the application.
The ADXL321 is available in a very thin 4 mm × 4 mm ×
1.45 mm, 16-lead, plastic LFCSP.
FUNCTIONAL BLOCK DIAGRAM
ADXL321
SENSOR
+3V
OUTPUT
AMP
OUTPUT
AMP
COM
ST
VS
CDC
DEMOD
AC
AMP
RFILT
32k
XOUT
CX
YOUT
CY
RFILT
32k
Figure 1.




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