MPL3115A2 I2C precision pressure sensor with altimetry Rev. 5.1 13 September 2016 Data sheet: Technical data 1 General description 2 The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I C 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 8.1.3Pressure/altitud 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 A 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 700 m to be equivalent altitude at 50 kPa Autonomous data acquisition Calibrated range: 50 kPa to 110 kPa absolute pressure Embedded 32-sample FIFO Calibrated temperature output: 40 C to 85 C Data logging up to 12 days using the FIFO 2 I C digital output interface (up to 400 kHz) One-second to nine-hour data acquisition rate Fully compensated internally 1.95 V to 3.6 V supply voltage, internally regulated Precision ADC resulting in 0.1 meter of effective resolution 1.6 V to 3.6 V digital interface supply voltage Direct reading Operating temperature from 40 C to +85 C Pressure: 20-bit measurement (Pascals) 20 to 110 kPa Altitude: 20-bit measurement (meters) 698 to 11,775 m Temperature: 12-bit measurement (C) 40 C to 85 CNXP Semiconductors MPL3115A2 I2C precision pressure sensor with altimetry 3 Applications High-accuracy altimetry and barometry Smartphones, tablets and wearable devices GPS applications: dead reckoning, map assist, navigation, enhancement for emergency services Weather station equipment 4 Ordering information Table 1. Ordering information Device number Shipping Package Number of ports Pressure Type Digital interface None Single Dual Gauge Differential Absolute MPL3115A2 Tray 98ASA002260D MPL3115A2R1 Tape and reel 98ASA002260D 5 Block diagram Figure 1. Block diagram MPL3115A2 All information provided in this document is subject to legal disclaimers. NXP B.V. 2016. All rights reserved Data sheet: Technical data Rev. 5.1 13 September 2016 2 / 50