The MPL3115A2 is a compact piezoresistive absolute pressure sensor with an I2C interface. MPL3115 has a wide operating range of 20 kPa to 110 kPa, a range that covers all surface elevations on Earth. The fully internally compensated MEMS in conjunction with an embedded high resolution 24-bit equivalent ADC provide accurate pressure [Pascals] /altitude [meters] and temperature [degrees Celsius] data. The internal processing in MPL3115A2 removes compensation and unit conversion load from the system MCU, simplifying system design.


  • Calibrated range: 50 kPa to 110 kPa absolute pressure
  • Operating range: 20 kPa to 110 kPa absolute pressure
  • I2C digital output interface (up to 400 kHz)
  • Fully compensated internally
  • Direct reading:
    • Pressure: 20-bit measurement [Pascals]
    • Altitude: 20-bit measurement [meters]
    • Temperature: 12-bit measurement [degrees Celsius]
  • Programmable Interrupts
  • Autonomous Data Acquisition:
    • Embedded 32-Sample FIFO
    • Data logging up to 12 days using the FIFO
    • 1 second to 9 hour data acquisition rate
  • 1.95 V to 3.6 V Supply Voltage, internally regulated
  • 1.6 V to 3.6 V Digital Interface Supply Voltage

Project details