Miniature Altimeter and Diving Pressure Sensor Module - MS5803-05BA

• Pressure​ range: 0 to 5 bar
• High resolution module, 30cm
• Fast conversion down to 1 ms
• Low power, 1 µA (standby < 0.15 µA)
• Supply voltage 1.8 to 3.6 V
• Operating Temperature​:-40 to +85 °C
• I2C and SPI interface (Mode 0,3)
• 24 bit ΔΣ ADC

  • Model Number: MS5803-05BA
  • Data Sheet: Date Sheet File
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  • Miniature Altimeter and Diving Pressure Sensor Module
  • Miniature Altimeter and Diving Pressure Sensor Module
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Product Specification

Miniature Altimeter and Diving Module

MS5803-05BA High Resolution Pressure Sensor Module Description
The MS5803-05BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI and I2C bus interface. It is optimized for depth meters and altimeters with an altitude resolution of 30 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 MS5803-05BA 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 MEAS Switzerland proven experience and know-how in high volume manufacturing of altimeter modules, which have been widely used for over a decade. The sensing principle employed leads to very low hysteresis and high stability of both pressure and temperature signal.

MS5803-05BA High Resolution Pressure Sensor Module Features
• High resolution module, 30cm
• Fast conversion down to 1 ms
• Low power, 1 µA (standby < 0.15 µA)
• Integrated digital pressure sensor (24 bit ΔΣ ADC)
• Supply voltage 1.8 to 3.6V
• Operating range: 0 to 5 bar, -40 to +85°C
• I²C and SPI (Mode 0, 3)
• No external components (Internal oscillator)
• Excellent long term stability
• Hermetically sealable for outdoor devices

MS5803-05BA High Resolution Pressure Sensor Module Applications
• Dual mobile altimeter/depth meter systems
• Adventure or multi-mode watches
• Diving computers

MS5803-05BA High Resolution Pressure Sensor Module Technical Data

Sensor Performances (VDD = 3 V)
5 bar
Resolution (1), Altimeter mode
0.195 / 0.126 / 0.081 / 0.054 / 0.036
Accuracy 20°C, 300 to 1100 mbar (2)
+1.5 mbar
Accuracy 0°C to +50°C, 0 to 5 bar (2)
+100 mbar
Response time
0.5 / 1.1 / 2.1 / 4.1 / 8.22
Long term stability


+85 °C

+2.5 °C
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096
           (2) With autozero at one pressure point

MS5803-05BA High Resolution Pressure Sensor Module Package Outline and Pin Configuration

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