The DD-AM-343 is a versatile 3 axis digital output lowg MEMS accelerometer. Selectable measurement range and bandwidth, and configurable built-in motion detection. Withstands 10000 g of shock and wide temperature range -40° C to 85° C. measures acceleration with high resolution {13 bit} measurement up to ±16 g. Digital output data is formatted as 16 bit twos compliment and is accessible through I2C digital interface. Measures the static acceleration of gravity in tilt sensing applications as well as dynamic acceleration resulting from motion or shock. Its high resolution enables measurement of inclination changes less than 1°.

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.




  • 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
  • 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


  • Handsets
  • Gaming and pointing devices
  • Hard disk drive (HDD) protection
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