Aurasemi – MEMS (AU1311) (10/2023)

The AU1311 is a low-noise, high-bandwidth, 3-axis digital accelerometer with full scale measurement at up to ±16g. The digital output data of the sensor is formatted as 16-bit two’s complement and is accessible through TDM/SPI/I2C interface. External host can configure the sensor by SPI/I2C interface. The AU1311 is well suited for hearables like smart earbuds. The device is in 2×2×0.86mm LGA package with 12 pins. It can operate in temperature range from -40℃ to 85℃.


  • Full-scale up to ±16g
  • Measurement range configurable
  • TDM/SPI/I2C interfaces
  • Signal bandwidth 3000Hz (TDM)
  • Low-noise
  • 16-bit data output


  • Bone vibration detection
  • Beam forming enhancement
  • Voice detection enhancement