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[size=1.25]Humidity sensor measuring relative humidity, barometric pressure and ambient temperature 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. Parameter | Technical data | Operation range
| 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 (typ.) (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
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1 s
±3% relative humidity
≤2% relative humidity
| Pressure sensor
RMS Noise
Sensitivity Error
Temperature coefficient offset
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0.2Pa (equiv. to 1.7cm)
±0.25% (equiv. to 1m at 400m height change)
±1.5Pa/K (equiv. to ±12.6cm at 1 °C temperature change)
| RoHS compliant, halogen-free, MSL1
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| Package dimensions
| 8-Pin LGA with metal
2.5 x 2.5 x 0.93 mm³
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