BME280

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.

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    SPECIFICATION

    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
    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 °C temperature change)

    RoHS compliant, halogen-free, MSL1
    Package dimensions
    8-Pin LGA with metal
    2.5 x 2.5 x 0.93 mm³