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

The MS5611-01BA 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.

FEATURES
FIELD OF APPLICATION
• Mobile altimeter / barometer systems
• Bike computers
• Variometers
• Height sensing for medical alarms
• Indoor navigation