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EVAL-ADXL343Z-M Datasheet(PDF) 1 Page - Analog Devices |
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EVAL-ADXL343Z-M Datasheet(HTML) 1 Page - Analog Devices |
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1 / 36 page  3-Axis, ±2 g/±4 g/±8 g/±16 g Digital MEMS Accelerometer Data Sheet ADXL343 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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 ©2012 Analog Devices, Inc. All rights reserved. FEATURES Multipurpose accelerometer with 10- to 13-bit resolution for use in a wide variety of applications Digital output accessible via SPI (3- and 4-wire) and I2C Built-in motion detection features make tap, double-tap, activity, inactivity, and free-fall detection trivial User-adjustable thresholds Interrupts independently mappable to two interrupt pins Low power operation down to 23 µA and embedded FIFO for reducing overall system power Wide supply voltage range: 2.0 V to 3.6 V I/O voltage 1.7 V to VS Wide operating temperature range (−40°C to +85°C) 10,000 g shock survival Small, thin, Pb free, RoHS compliant 3 mm × 5 mm × 1 mm LGA package APPLICATIONS Handsets Gaming and pointing devices Hard disk drive (HDD) protection GENERAL DESCRIPTION The ADXL343 is a versatile 3-axis, digital-output, low g MEMS accelerometer. Selectable measurement range and bandwidth, and configurable, built-in motion detection make it suitable for sensing acceleration in a wide variety of applications. Robustness to 10,000 g of shock and a wide temperature range (−40°C to +85°C) enable use of the accelerometer even in harsh environments. The ADXL343 measures acceleration with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either an SPI (3- or 4-wire) or I2C digital interface. The ADXL343 can measure the static acceleration of gravity in tilt-sensing appli- cations, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°. Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. These functions can be mapped individually to either of two interrupt output pins. An integrated memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption. The ADXL343 is supplied in a small, thin, 3 mm × 5 mm × 1 mm, 14-terminal, plastic package. FUNCTIONAL BLOCK DIAGRAM 3-AXIS SENSOR SENSE ELECTRONICS DIGITAL FILTER ADXL343 POWER MANAGEMENT CONTROL AND INTERRUPT LOGIC SERIAL I/O INT1 VS VDD I/O INT2 SDA/SDI/SDIO SDO/ALT ADDRESS SCL/SCLK GND ADC 32 LEVEL FIFO CS Figure 1. |
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