STMicroelectronics – Three-axis accelerometer includes internal motion-detection engine

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The LIS2DW12 from STMicroelectronics is an ultra low-power and high- performance three-axis linear accelerometer used to detect motion and acceleration.

The LIS2DW12 has user-selectable full scales of ±2g, ±4g, ±8g or ±16g, and is capable of measuring acceleration at output data rates from 1.6Hz to 1.6kHz.

The LIS2DW12 has an integrated 32-level First-In, First-Out (FIFO) buffer allowing the user to store data in order to limit the requirement for intervention by a host processor. An embedded self-test capability enables the user to check the functioning of the sensor in the final application.

The LIS2DW12 has a dedicated internal engine which can perform motion- and acceleration-detection functions including free-fall, wake-up, single- or double- tap recognition, activity/ inactivity detection, portrait/ landscape detection and 6D/4D orientation.

The LIS2DW12 is available in a small thin plastic LGA package measuring 2mm x 2mm x 0.7mm. It is guaranteed to operate over an extended temperature range from -40°C to 85°C.

FEATURES

  • Supply-voltage range: 1.62V to 3.6V
  • 50nA current in power-down mode
  • <1μA current in active low-power mode
  • 1.3mgrms noise in low-power mode
  • I2C/SPI interface
  • 16-bit data output
  • Embedded temperature sensor
  • Survives 10,000g shock

APPLICATIONS

  • Gesture recognition
  • Display orientation
  • Hearing aids
  • Portable healthcare devices
  • Wireless sensor nodes

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