Absolute Digital Pressure Sensor (20 to 110 kPa) | NXP Semiconductors

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Absolute Digital Pressure Sensor (20 to 110 kPa)

MPL3115A2 Active

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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.

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 uA per measurement-second for a stable 10 cm output resolution.

Block Diagram

MPL3115A2

MPL3115A2 Block Diagram
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Features

Key Features

  • 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
  • Programmable Interrupts
  • 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
  • 5 mm x 3 mm x 1.1 mm LGA package (1.25 mm lead pitch)
  • MSL 1 compliant

Direct Reading

  • Pressure: 20-bit measurement [Pascals]
  • Altitude: 20-bit measurement [meters]
  • Temperature: 12-bit measurement [degrees Celsius]

Autonomous Data Acquisition

  • Embedded 32-Sample FIFO
  • Data logging up to 12 days using the FIFO
  • 1 second to 9 hour data acquisition rate

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MPL3115A2S
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1K @ US$1.80
MPL3150A2S
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1K @ US$1.80

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