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It is optimized for altimeters and variometers with an altitude resolution of 20 cm. The sensor module includes a high-linearity pressure  sensor  and  an  ultra  low  power  24  bit ΔΣ ADC with internal factory-calibrated coefficients. It provides a precise digital 24 Bit pressure  and  temperature  value  and  different  operation modes that allow the user to optimize for conversion speed and current consumption. A high-resolution temperature output allows the implementation of an altimeter/thermometer function without any  additional  sensor. The MS5805-02BA can be interfaced  to virtually  any  microcontroller. The  communication protocol is simple, without the need of programming internal registers in the device. The sensing principle employed leads to very low hysteresis and high stability of  both pressure and temperature signal.


  • High resolution module, 20 cm 
  • Fast conversion down to 0.5 ms 
  • Low power, 0.6 µA (standby < 0.15 µA at 25°C) 
  • Integrated digital pressure sensor (24 bit ΔΣ ADC)  
  • Supply voltage 1.8 to 3.6 V 
  • Operating range: 300 to 1200 mbar, -40 to +85 °C 
  • Extended pressure range: 10 to 2000 mbar  
  • I2C interface 
  • No external components (Internal oscillator) 
  • Excellent long term stability
  • Sealing designed for 2.5 x 1mm O-ring



Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Board Level Pressure Sensor Type  Digital Pressure and Altimeter Sensor Modules

  • Board Level Pressure Sensor Style  Absolute

Electrical Characteristics

  • Board Level Pressure Sensor Supply Voltage (V) 1.8 – 3.6


  • Dimensions  4.5 x 4.5 mm [ .17 x .17 in ]

Usage Conditions

  • Pressure  2 bar [ 29 psi ]

  • Operating Temperature Range (°C) -40 – 85

  • Operating Temperature Range (°F) -40 – 185, -40 – 185


  • Output Interface  I²C or SPI

  • Proof Pressure Range  5 bar

  • Pressure  2000 mbar [ 802.92 inH2O ]

  • Pressure (mmHG) 1500.12

  • Output/Span  24 bit ADC

  • Board Level Pressure Sensor Accuracy  ±4mbar

  • Resolution  .02

Packaging Features

  • Board Level Pressure Sensor Package  Surface Mountable

Reference Number

  • TE Internal Number CAT-BLPS0015

Related Materials

Datasheets & Catalog Pages

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