MS5611-01BA03

The MS5611-01BA03 is a new generation of high resolution
altimeter sensors from MEAS Switzerland with SPI and I2C bus
interface. This barometric pressure sensor 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 only 1.0 mm
allow for integration in devices. This new sensor module
generation is based on leading MEMS technology and latest
benefits from MEAS Switzerland proven experience and knowhow
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, 10 cm
? Fast conversion down to 1 ms
? Low power, 1 μA (standby < 0.15 μA)
? QFN package 5.0 x 3.0 x 1.0 mm3
? Supply voltage 1.8 to 3.6 V
? Integrated digital pressure sensor (24 bit ΔΣ ADC)
? Operating range: 10 to 1200 mbar, -40 to +85 °C
? I2C and SPI interface up to 20 MHz
? No external components (Internal oscillator)
? Excellent long-term stability

FEATURES：
FIELD OF APPLICATION
? barometer systems
? Bike computers
? Variometers
? Height sensing for medical alarms
? Indoor navigation