Altitude 2 click is a high-resolution barometric pressure sensor Click board™. It provides very accurate measurements of temperature and atmospheric pressure, which can be used to calculate the altitude with a very high resolution of 20cm per step. Besides that, the device also includes features such as the ultra-low noise delta-sigma 24bit ADC, low power consumption, fast conversion times, pre-programmed unique compensation values, and more. Low count of external components requirement, along with the simple interface which requires no extensive configuration programming, makes this sensor very attractive for building altitude or air pressure measuring applications.

High resolution module, 20cm
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
Mobile altimeter / barometer systems
Bike computers
Variometers
Dataloggers
Mobile phones / GPS