Bosch Sensortec

BME280

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.


Technical data

Parameter Technical data
Parameter
Operation range (full accuracy)
Technical data
Pressure: 300...1100 hPa
Temperature: -40…85°C
Parameter
Absolute accuracy
(Temp. @ 0…+65°C)
Technical data
~ ±1 hPa
± 0.12 hPa (typical)
equivalent to ±1 m
Parameter
Relative accuracy
p = 700…900hPa
(Temp. @ +25...+40°C)
Technical data
3.4 μA @ 1 Hz
Parameter
Average typical current consumption (1 Hz data rate)
Technical data
±0.50 hPa
Parameter
Absolute accuracy pressure (typ.)
P=300 ...1100 hPa (T=0 ... 65 °C)
Technical data
±0.06 hPa
(equivalent to ±50 cm)
Parameter
Relative accuracy pressure (typ.)
P=900…1100 hPa (T=25…40°C)
Technical data
2.74 μA, typical
(ultra-low power mode)
0.1 μA
5.5 msec
(ultra-low power preset)
Parameter
Average current consumption (1 Hz data refresh rate)
Technical data
1.2 ... 3.6 V
Parameter
Average current consumption in sleep mode
Technical data
1.71 ... 3.6 V
Parameter
Average measurement time
Technical data
Pressure: 0.01 hPa ( < 10 cm)
Temperature: 0.01° C
Parameter
Supply voltage VDDIO
Technical data
1.5 Pa/K, equiv. to 12.6 cm/K
Parameter
Supply voltage VDD
Resolution of data
Technical data
I²C and SPI
Parameter
Temperature coefficient offset
(+25°…+40°C @900hPa)
Interface
Package dimensions
Technical data


8-Pin LGA with metal
2.0 x 2.5 x 0.95 mm³

Documents

Software

Woman doing sports using hearables and smartwatch

Wearables & hearables

Smartwatches, wristbands, smart clothes and hearables: whether supporting your fitness through calorie counting or helping you orient yourself through navigation, our accurate and ultra-low power sensing solutions turn a regular wearable into your daily companion!

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The BSEC software is only available for download after accepting the software license agreement:

BSEC license agreement

You will soon receive an e-mail with the download link.