Overview

Features and Benefits

  • 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

Product Details

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 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 ±16g. 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.



Applications
  • Handsets
  • Gaming and pointing devices
  • Personal navigation devices
  • Hard disk drive (HDD) protection
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    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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    Evaluation Boards Pricing displayed is based on 1-piece.
    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.