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It is optimized for altimeter and in the same time water depth measurement with high resolution and accuracy. 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  a  thermometer  function without   any   additional   sensor.   The   MS5803-07BA   can   be interfaced  to  virtually  any   microcontroller.  The  communication protocol  is  simple,  without  the  need  of   programming  internal registers  in  the  device.  The  gel  protection  and  antimagnetic stainless steel cap allows the use  in 100m waterproof watches. This new sensor module generation is based on leading MEMS technology  and  latest  benefits  from  Measurement  Specialties proven experience and know-how in high volume manufacturing
which have been widely used for over a decade.  


  • Excellent accuracy for both altimeter and diving applications until 70m depth 
  • Operating range: 0 to 7 bar, -20 to +85 °C  
  • High resolution module, 0.4m air / 1mm water 
  • Fast conversion down to 1 ms 
  • Low power, 1 µA (standby < 0.15 µA) 
  • 24 bit ΔΣ calibrated output  
  • Supply voltage 2.2 to 3.6 V 
  • I 2 C and SPI interface (Mode 0, 3)
  • No external components (Internal oscillator)
  • Excellent long term stability

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

Product Type Features

  • Sensor Type  Digital Pressure and Altimeter Sensor Modules

  • Type  Absolute

Electrical Characteristics

  • Supply Voltage (V) 2.2, 3.6


  • Dimensions 6.2 x 6.4 mm [ .24 x .25 in ]

Usage Conditions

  • Operating Temperature -20 – 85 °C [ -4 – 185 °F ]


  • Pressure (mbar) 7000

  • Output/Span  24 bit ADC

  • Resolution  .04

  • Accuracy  ±50mbar

  • Output Interface  I²C and SPI (Mode 0, 3)

  • Overpressure  30 bar

Packaging Features

  • Package  Surface Mountable

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