MPL3115A2

MPL3115A2 I2C precision pressure sensor with altimetry Rev. 8 — 12 April 2018 Data sheet: technical data 1 General description The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I2C digital interface. MPL3115A2 has a wide operating range of 20 kPa to 110 kPa, a range that covers all surface elevations on earth. The MEMS is temperature compensated utilizing an on-chip temperature sensor. The pressure and temperature data is fed into a high resolution ADC to provide fully compensated and digitized outputs for pressure in Pascals and temperature in °C. The compensated pressure output can then be converted to altitude, utilizing the formula stated in Section 9.1.3 "Pressure/altitude" provided in meters.The internal processing in MPL3115A2 removes compensation and unit conversion load from the system MCU, simplifying system design. MPL3115A2's advanced ASIC has multiple user programmable modes such as power saving, interrupt and autonomous data acquisition modes, including programmed acquisition cycle timing, and poll-only modes. Typical active supply current is 40 μA per measurement-second for a stable 10 cm output resolution. 2 Features and benefits Operating range: 20 kPa to 110 kPa absolute pressure Programmable interrupts Calibrated range: 50 kPa to 110 kPa absolute pressure Autonomous data acquisition Calibrated temperature output: −40 °C to 85 °C I2C digital output interface – Embedded 32-sample FIFO – Data logging up to 12 day...