MS5805-02BA01

The MS5805-02BA01 is a new generation of high-resolution
altimeter sensors from MEAS Switzerland 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.

SPECIFICATIONS：
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

FEATURES：
FIELD OF APPLICATION
Altimeter / barometer systems 

Bike computers 

Adventure or multi-mode watches 

Variometers 

Dataloggers