Combined Humidity And Pressure Sensor

Product Attribute:

Applicationt: 

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Production Description:

General Description
    The BME280 is a humidity sensor especially developed for mobile applications and wearables where size and low power consumption are key design parameters. The unit combines high linearity and high accuracy sensors and is perfectly feasible for low current consumption, long-term stability and high EMC robustness. The humidity sensor offers an extremely fast response time and therefore supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range.
 
Key features
 Package                              2.5 mm x 2.5 mm x 0.93 mm metal lid LGA
 Digital interface                  I2C (up to 3.4 MHz) and SPI ((3 and 4 wire, up to 10 MHz)
 Supply voltage                    V_DD main supply voltage range: 1.71 V to 3.6 V
                                               V_DDID  interface voltage range: 1.2 V to 3.6 V
 Current consumption          1.8 A @ 1 Hz humidity and temperature
                                               2.8 A @ 1 Hz pressure and temperature
                                               3.6 A @ 1 Hz humiditypressure and temperature
                                               0.1 A in sleep mode
 Operating range                 -40...+850...100 % rel. humidity, 300...1100 hPa
 Humidity sensor and pressure sensor can be independently enabled/ disabled
 Register and performance compatible to Bosch Sensortec BMP280 digital pressure sensor
 RoHS compliant, halogen-free, MSL1
 
Key parameters for humidity sensor
 Response time (t63%)                     1s
 Accuracy tolerance                         ±3 % relative humidity
 Hysteresis                                       ±1% relative humidity
 
Key parameters for pressure sensor
 RMS Noise                                           0.2 Pa, equiv.to 1.7cm
 Offset temperature coefficient            ±1.5 Pa/K,equiv.to±12.6cm at1 temperature change


Typical application
 Context awareness,e.g.skin detection, room change detection
 Fitness monitoring / well-being
    -Warning regarding dryness or high temperatures
    -Measurement of volume and air flow
 Home automation control
    -control heating, venting, air conditioning (HVAC)
 Internet of things
 GPS enhancement(e.g. time-to-first-fix improvement, dead reckoning, slope detection)
 Indoor navigation (change of floor detection, elevator detection)
 Outdoor navigation, leisure and sports applications
 Weather forecast
 Vertical velocity indication (rise/sink speed)
 
Target devices
 Handsets such as mobile phones, tablet PCs, GPS devices
 Navigation systems
 Gaming, e.g flying toys
 Camera (DSC, video)
 Home weather stations
 Flying toys
 Watches


Technical data