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 VDD main supply voltage range: 1.71 V to 3.6 V
VDDID 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
Parameter | Technical data |
Operation range |
Pressure: 300...1100 hPa Temperature: -4085 |
Supply voltage VDDIO Supply voltage VDD |
1.2 ... 3.6 V 1.71 ... 3.6 V |
Interface | I2C and SPI |
Average current consumption (typ.) (1Hz data refresh rate) |
1.8 A @ 1 Hz (H, T) 2.8 A @ 1 Hz (P, T) 3.6 A @ 1 Hz (H, P, T) T = temperature |
Average current consumption in sleep mode | 0.1 A |
Humidity sensor Response time (63%) Accuracy tolerance Hysteresis |
1 s ±3% relative humidity 2% relative humidity |
Pressure sensor RMS Noise Sensitivity Error Temperature coefficient offset |
0.2Pa (equiv. to 1.7cm) ±0.25% (equiv. to 1m at 400m height change) ±1.5Pa/K (equiv. to ±12.6cm at 1 temperature change) |
RoHS compliant, halogen-free, MSL1 | |
Package dimensions |
8-Pin LGA with metal 2.5 x 2.5 x 0.93 mm3 |
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