BME280

The BME280 is an integrated environmental sensor developed specifically for mobile applications where size and low power consumption are key design constraints. The unit combines individual high linearity, high accuracy sensors for pressure, humidity and temperature in an 8-pin metal-lid 2.5 x 2.5 x 0.93 mm3 LGA package, designed for low current consumption (3.6 μA @1Hz), long term stability and high EMC robustness.

The humidity sensor features an extremely fast response time which supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range. The pressure sensor is an absolute barometric pressure sensor with features exceptionally high accuracy and resolution at very low noise. The integrated temperature sensor has been optimized for very low noise and high resolution. It is primarily used for temperature compensation of the pressure and humidity sensors, and can also be used for estimating ambient temperature.

The BME280 supports a full suite of operating modes which provides the flexibility to optimize the device for power consumption, resolution and filter performance.

Applications

  • Context awareness, e.g. skin detection, room change detection
  • Health monitoring / well-being
    • Warning regarding dehydration or heat stroke
    • Measurement of lung volume and air flow
  • Home automation control
    • Control heating, ventilation, 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)
 
 

Parameter Technical data
Package dimensions 8-Pin LGA with metal
2.5 x 2.5 x 0.93 mm³
Operation range
(full accuracy)
Pressure: 300...1100 hPa
Temperature: -40…85°C
Supply voltage VDDIO
Supply voltage VDD
1.2 ... 3.6 V
1.71 ... 3.6 V
Interface I²C and SPI
Average current
consumption
(1Hz data refresh rate)
1.8 μA @ 1 Hz (H, T)
2.8 μA @ 1 Hz (P, T)
3.6 μA @ 1 Hz (H, P, T)
T=temperature
Average current
consumption in
sleep mode
0.1 μA
Humidity sensor
Response time (τ63%)
Accuracy tolerance
Hysteresis

1s
± 3 % relative humidity
≤ 2 % relative humidity
Pressure sensor
RMS Noise
Sensitivity Error
Temperature
coefficient
offset

0.2 Pa (equiv. to 1.7 cm)
± 0.25 % (equiv. to 1 m at
400 m height change)
±11.5 Pa/K
(equiv. to ±12.6 cm at 1°C
temperature change
RoHS compliant, halogen-free, MSL1  
 
 

Type of document Download
Flyer BST-BME280-FL000-00
Datasheet