XDK110
BCDS
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General Information Guide XDK110
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2.3.5 BME280: Environmental Sensor
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, designed for low
current consumption (3.6 µA @ 1 Hz), and long-term stability. 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 which 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.
Table 9
: Sensor Measurement Ranges and Accuracies
Parameter
Condition
Min
Max
Unit
Operating Temperature Range
Operational
-20
25
+60
°C
Full Accuracy
0
+60
°C
Operating Pressure Range
300
1100
hPa
Absolute Accuracy Pressure
±10
hPa
Absolute Accuracy Temperature
±2
K
Absolute Accuracy Humidity
±10
%RH
Average Current Consumption
(1Hz Data Refresh Rate)
H, T
1.8
µA
P, T
2.8
µA
H, P, T
3.6
µA
