Small, Low Power, 2-Axis 3 g i MEMS Accelerometer ADXL323 FEATURES GENERAL DESCRIPTION 2-axis sensing The ADXL323 is a small, thin, low power, complete 2-axis Small, low-profile package accelerometer with signal-conditioned voltage outputs, all 4 mm 4 mm 1.45 mm LFCSP LQ on a single, monolithic IC. The product measures acceleration Low power with a minimum full-scale range of 3 g. It can measure the 180 A at VS = 1.8 V (typical) static acceleration of gravity in tilt-sensing applications, as well Single-supply operation as dynamic acceleration resulting from motion, shock, or 1.8 V to 5.25 V vibration. 10,000 g shock survival The user selects the bandwidth of the accelerometer using the Excellent temperature stability C and C capacitors at the X and Y pins. Bandwidths X Y OUT OUT BW adjustment with a single capacitor per axis can be selected to suit the application, with a range of 0.5 Hz RoHS/WEEE lead-free compliant to 1600 Hz. APPLICATIONS The ADXL323 is available in a small, low profile, 4 mm Cost-sensitive, low power, motion- and tilt-sensing 4 mm 1.45 mm, 16-lead, plastic lead frame chip scale package applications (LFCSP LQ). Mobile devices Gaming systems Disk drive protection Image stabilization Sports and health devices FUNCTIONAL BLOCK DIAGRAM +3V V S ADXL323 R X FILT OUT OUTPUT AMP 2-AXIS SENSOR C X C AC AMP DEMOD DC R FILT Y OUT OUTPUT AMP C Y 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06237-001ADXL323 TABLE OF CONTENTS Features .............................................................................................. 1 Performance................................................................................ 11 Applications....................................................................................... 1 Applications..................................................................................... 12 General Description ......................................................................... 1 Power Supply Decoupling ......................................................... 12 Functional Block Diagram .............................................................. 1 Setting the Bandwidth Using CX, CY, and CZ.......................... 12 Revision History ............................................................................... 2 Self Test ........................................................................................ 12 Specifications..................................................................................... 3 Design Trade-Offs for Selecting Filter Characteristics: The Noise/BW Trade-Off.................................................................. 12 Absolute Maximum Ratings............................................................ 4 Use with Operating Voltages Other Than 3 V ........................... 12 ESD Caution.................................................................................. 4 Axes of Acceleration Sensitivity ............................................... 13 Pin Configuration and Function Descriptions............................. 5 Outline Dimensions ....................................................................... 14 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 14 Theory of Operation ...................................................................... 11 Mechanical Sensor...................................................................... 11 REVISION HISTORY 8/06Revision 0: Initial Version Rev. 0 Page 2 of 16