Small, Low Power, 3-Axis 3 g Accelerometer ADXL337 FEATURES GENERAL DESCRIPTION 3-axis sensing The ADXL337 is a small, thin, low power, complete 3-axis Small, low profile package accelerometer with signal conditioned voltage outputs. The 3 mm 3 mm 1.45 mm LFCSP product measures acceleration with a minimum full-scale range Low power: 300 A (typical) of 3 g. It can measure the static acceleration of gravity in tilt- Single-supply operation: 1.8 V to 3.6 V sensing applications, as well as dynamic acceleration resulting 10,000 g shock survival from motion, shock, or vibration. Excellent temperature stability The user selects the bandwidth of the accelerometer using the Bandwidth adjustment with a single capacitor per axis C , C , and C capacitors at the X , Y , and Z pins. X Y Z OUT OUT OUT RoHS/WEEE and lead-free compliant Bandwidths can be selected to suit the application, with a range of 0.5 Hz to 1600 Hz for X and Y axes and a range of 0.5 Hz to 550 Hz for the Z axis. APPLICATIONS Cost-sensitive, low power, motion- and tilt-sensing applications The ADXL337 is available in a small, low profile, 3 mm 3 mm Mobile devices 1.45 mm, 16-lead, lead frame chip scale package (LFCSP LQ). Gaming systems Disk drive protection Image stabilization Sports and health devices FUNCTIONAL BLOCK DIAGRAM +3V V S ADXL337 X ~32k OUTPUT OUT AMPLIFIERS AC C AMPLIFIER X Y C ~32k DC OUT DEMODULATOR C Y 3-AXIS SENSOR Z ~32k OUT C Z GND 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 2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 09358-001ADXL337 TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .............................................................. 11 Applications ....................................................................................... 1 Power Supply Decoupling ......................................................... 11 General Description ......................................................................... 1 Setting the Bandwidth Using CX, CY, and CZ .......................... 11 Functional Block Diagram .............................................................. 1 Self Test ........................................................................................ 11 Revision History ............................................................................... 2 Design Trade-Offs for Selecting Filter Characteristics: The Noise/BW Trade-Off .................................................................. 11 Specif icat ions ..................................................................................... 3 Use with Operating Voltages Other than 3 V ............................ 12 Absolute Maximum Ratings ............................................................ 4 Axes of Acceleration Sensitivity ............................................... 12 ESD Caution .................................................................................. 4 Layout and Design Recommendations ................................... 13 Pin Configuration and Function Descriptions ............................. 5 Outline Dimensions ....................................................................... 14 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 14 Theory of Operation ...................................................................... 10 Mechanical Sensor ...................................................................... 10 Performance ................................................................................ 10 REVISION HISTORY 10/10Revision 0: Initial Version Rev. 0 Page 2 of 16