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Miniature Altimeter Pressure Sensor Module - MS5805-02BA01

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• High resolution module, 20 cm
• Fast conversion down to 0.5 ms
• Low power, 0.6 µA (standby < 0.15 µA at 25°C)
• 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
• Excellent long term stability
• Sealing designed for 2.5 x 1mm O-ring

Model Number: MS5805-02BA01
Data Sheet:

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Product Specification

MS5805-02BA01
Miniature Altimeter Module

MS5805-02BA01 Pressure Sensor Module Description
The MS5805-02BA is a new generation of high-resolution altimeter sensors with I²C bus interface. 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. 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.

MS5805-02BA01 Pressure Sensor Module Features
• High resolution module, 20cm
• 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 - 3.6V
• Operating range: 300 to 1200mBar, -40°C 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

MS5805-02BA01 Pressure Sensor Module Applications
• Mobile altimeter/barometer systems
• Bike computers
• Adventure or multi-mode watches
• Variometers
• Dataloggers

MS5805-02BA01 Pressure Sensor Module Technical Data

Sensor Performances (V DD = 3 V)
Pressure	Min	Typ	Max	Unit
Range	10		2000	mbar
ADC	24			bit
Resolution (1)	0.35 / 0.19 / 0.11 / 0.06 / 0.03 / 0.02			mbar
Accuracy 25°C, 750 to 1100 mbar	-2		+2	mbar
Accuracy -20°C to + 85°C, 300 to 1200 mbar (2)	-4		+4	mbar
Response time	0.5 / 1.1 / 2.1 / 4.1 / 8.22 / 16.44			ms
Long term stability		±1		mbar/yr
Temperature	Min	Typ	Max	Unit
Range	-40		+85	°C
Resolution		<0.01		°C
Accuracy	-1		+1	°C
Notes: (1) Oversampling Ratio: 256 / 512 / 1024 / 2048 / 4096/ 8192 (2) With autozero at one pressure point