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ADXL323 Datasheet

Dual Axis Accelerometer

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FEATURES
2-axis sensing
Small, low-profile package
4 mm × 4 mm × 1.45 mm LFCSP_LQ
Low power
180 μA at VS = 1.8 V (typical)
Single-supply operation
1.8 V to 5.25 V
10,000 g shock survival
Excellent temperature stability
BW adjustment with a single capacitor per axis
RoHS/WEEE lead-free compliant
APPLICATIONS
Cost-sensitive, low power, motion- and tilt-sensing
applications
Mobile devices
Gaming systems
Disk drive protection
Image stabilization
Sports and health devices
Small, Low Power, 2-Axis ±3 g
i MEMS® Accelerometer
ADXL323
GENERAL DESCRIPTION
The ADXL323 is a small, thin, low power, complete 2-axis
accelerometer with signal-conditioned voltage outputs, all
on a single, monolithic IC. The product measures acceleration
with a minimum full-scale range of ±3 g. It can measure the
static acceleration of gravity in tilt-sensing applications, as well
as dynamic acceleration resulting from motion, shock, or
vibration.
The user selects the bandwidth of the accelerometer using the
CX and CY capacitors at the XOUT and YOUT pins. Bandwidths
can be selected to suit the application, with a range of 0.5 Hz
to 1600 Hz.
The ADXL323 is available in a small, low profile, 4 mm ×
4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP_LQ).
FUNCTIONAL BLOCK DIAGRAM
+3V
VS
ADXL323
CDC
2-AXIS
SENSOR
AC AMP
DEMOD
OUTPUT AMP
RFILT
XOUT
CX
OUTPUT AMP
RFILT
YOUT
CY
COM
ST
Figure 1.
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

ADXL323 Datasheet

Dual Axis Accelerometer

No Preview Available !

www.DataSheet4U.com
ADXL323
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 11
Mechanical Sensor...................................................................... 11
Performance ................................................................................ 11
Applications..................................................................................... 12
Power Supply Decoupling ......................................................... 12
Setting the Bandwidth Using CX, CY, and CZ.......................... 12
Self Test ........................................................................................ 12
Design Trade-Offs for Selecting Filter Characteristics: The
Noise/BW Trade-Off.................................................................. 12
Use with Operating Voltages Other Than 3 V ........................... 12
Axes of Acceleration Sensitivity ............................................... 13
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
8/06—Revision 0: Initial Version
Rev. 0 | Page 2 of 16


Part Number ADXL323
Description Dual Axis Accelerometer
Maker Analog Devices
Total Page 16 Pages
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