MPL3115A2

MPL3115A2
I2C Precision Altimeter, Freescale Semiconductor, RoHS

The MPL3115A2 employs a MEMS pressure sensor with an I 2 C interface to provide accurate Pressure/Altitude and Temperature data. The sensor outputs are digitized by a high resolution 24-bit ADC. Internal processing removes compensation tasks from the host MCU system. Multiple user-programmable, power saving, interrupt and autonomous data acquisition modes are available, including programmed acquisition cycle timing, and poll-only modes. Typical active supply current is 40 uA per measurement-second for a stable 30 cm output resolution. Pressure output can be resolved with output in fractions of a Pascal, and Altitude can be resolved in fractions of a meter.

Features:

• 1.95V to 3.6V Supply Voltage, internally regulated by LDO
• 1.6V to 3.6V Digital Interface Supply Voltage
• Fully Compensated internally
• Direct Reading, Compensated:
  • Pressure: 20-bit measurement (Pascals)
  • Altitude: 20-bit measurement (meters)
  • Temperature: 12-bit measurement (degrees Celsius)
• Programmable Events
• Autonomous Data Acquisition
• Resolution down to 1 ft. / 30 cm
• 32 Sample FIFO
• Ability to log data up to 12 days using the FIFO
• 1 second to 9 hour data acquisition rate
• I2C digital output interface (operates up to 400 kHz)