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Sensirion SDP3x Differential Pressure Sensors

Sensirion SDP3x Differential Pressure Sensors are designed for high-volume applications where size is an important requirement. Based on Sensirion’s CMOSens® sensor chip the SDP3x features excellent accuracy and long-term stability and has no zero-point drift. The SDP3x Differential Pressure Sensors are available in digital or analog output. Measuring 5mm x 8mm x 5mm, the small SDP3x sensors are ideal for medical devices, drones, appliances, and more.

Features

  • 5mm x 8mm x 5mm in dimension
  • Measurement range of ±500Pa (±2in. H2O) or ±125Pa (±0.5in. H2O)
  • Excellent accuracy and repeatability, even below 1Pa
  • No zero-point offset (digital version), no drift
  • Calibrated and temperature compensated
  • Fast sampling time of 2kHz at 16-bit resolution
  • Digital I2C and analog output versions
  • Reflow solderable, shipped in tape and reel for pick and place
  • Smart averaging algorithm (digital version)

Applications

  • Medical
    • Medical home care applications
    • Portable medical devices
    • Smart Inhalers
  • Lifestyle and consumer (IoT)
  • Appliances
  • Drones
  • Wind speed meters

Specifications

  • Digital models (SDP31, SDP32, and SDP33)
    • I2C output
    • Manifold pneumatic connection
    • Bidirectional pressure ranges
      • 500Pa, 2.0" H2O for SDP31
      • 125Pa, 0.5" H2O for SDP32
      • 1500Pa, 6.0" H2O for SDP33
    • 2.7V to 5.5V power supply range
    • 3% accuracy of the measured value
    • Lowest detectable pressures
      • <0.02Pa for SDP31
      • <0.01Pa for SDP32
      • <0.06Pa for SDP33
    • 0.5ms measurement speed
    • Calibrated for air and N2
    • Air and inert gases compatibility
  • Analog models (SDP36 and SDP37)
    • Analog output
    • Manifold pneumatic connection
    • Bidirectional pressure ranges
      • 500Pa, 2.0" H2O for SDP36
      • 125Pa, 0.5" H2O for SDP37
    • 2.7V to 5.5V power supply range
    • 3% accuracy of the measured value
    • Lowest detectable pressures
      • <0.02Pa for SDP36
      • <0.01Pa for SDP37
    • 5ms measurement speed
    • Calibrated for air and N2
    • Air and inert gases compatibility

Analog Sensors

The analog SDP3x sensors offer a calibrated and temperature compensated analog voltage output. The output signal is configurable: different measurement speeds, output curves, and temperature compensations can be selected – even dynamically during operation mode.

View Product Details          Datasheet

Digital Sensors

The digital SDP3x sensors feature fast measurement speed, excellent accuracy, long-term stability, and has no zero-point drift. The sensors provide extended functionality, including smart averaging, multiple temperature compensation modes, and configurable I²C addresses and interrupts.

View Product Details          Datasheet

Videos

Additional Resources

Evaluation Tools

Sensirion SEK-SDP31 Differential Pressure Evaluation Kit

Provides an easy-to-use and cost-effective demonstration platform for the SDP31 Pressure Sensor.

Learn Moreabout Sensirion SEK-SDP31 Differential Pressure Evaluation Kit View Productsrelated to Sensirion SEK-SDP31 Differential Pressure Evaluation Kit
Published: 2016-09-14 | Updated: 2022-05-23