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The MS5611-01BA is a new generation of high resolution altimeter sensors from MEAS Switzerland with SPI
and I2C bus interface. It is optimized for altimeters and variometers with an altitude resolution of 10 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 MS5611-01BA can be interfaced to virtually any microcontroller. The communication
protocol is simple, without the need of programming internal registers in the device. Small dimensions of only
5.0 mm x 3.0 mm and a height of 1.7 mm allow for integration in mobile devices. 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.

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