深圳市中立信电子科技有限公司

MPL3115A2

板机接口压力传感器 I 2 C VERSION  I2C precision pressure sensor with altimetry

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.

Features and benefits

• Operating range: 20 kPa to 110 kPa absolute pressure

• Calibrated range: 50 kPa to 110 kPa absolute pressure

• Calibrated temperature output: −40 °C to 85 °C

• I2C digital output interface

• Fully compensated internally

• Precision ADC resulting in 0.1 meter of effective resolution

• Direct reading

– 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 °C

• Programmable interrupts

• Autonomous data acquisition

– Embedded 32-sample FIFO

– Data logging up to 12 days using the FIFO

– One-second to nine-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

• Operating temperature from −40 °C to +85 °C