BME688
The BME688 is the first gas sensor with Artificial Intelligence (AI) and integrated high-linearity
and high-accuracy pressure, humidity and temperature sensors. It is housed in a robust yet
compact 3.0 x 3.0 x 0.9 mm³ package and especially developed for mobile & connected applications
where size and low power consumption are critical requirements. The gas sensor can detect Volatile
Organic Compounds (VOCs) and other gases such as carbon monoxide and hydrogen in the part
per billion (ppb) range.
Additionally to all features of the BME680, the BME688 has a gas scanner function.
The new BME AI-Studio tool enables customers to train the BME688 gas scanner on their
specific application, like in home appliances, IoT products or Smart Home.
Package dimensions: 8-Pin LGA with metal
3.0 x 3.0 x 0.93 mm³
Operation range (full accuracy) Pressure: 300...1100 hPa
Humidity 0…100%
Temperature: -40…85°C
Supply voltage VDDIO 1.2 ... 3.6 V
Supply voltage VDD 1.71 ... 3.6 V
Interface I²C and SPI
Average current consumption 2.1 µA at 1 Hz humidity and temperature
3.1 µA at 1 Hz pressure and temperature
3.7 µA at 1 Hz humidity, pressure and temperature
90 µA at ULP mode for p/h/T & air quality
0,9 mA at LP mode for p/h/T & air quality
3,9 mA in standard gas scan mode
(gas scan mode & scan rate can be optimized on applications with BME AI studio)
Gas sensor
Response time (τ 33-63%) < 1 s (for new sensors)
Sensor-to-sensor deviation +/- 15% +/- 15
Power consumption < 0.1 mA in ultra-low power mode
Output data processing direct output of IAQ: Index for Air Quality
Humidity sensor
Response time (τ0-63%) 8 s
Accuracy tolerance ± 3 % relative humidity
Hysteresis ≤ 1.5 % relative humidity
Pressure sensor
RMS Noise 0.12 Pa (equiv. to 1.7 cm)
Sensitivity Error ± 0.25 % (equiv. to 1 m at 400 m height change)
Temperature coefficient offset ±1.3 Pa/K (equiv. to ±10.9 cm at 1°C temperature change)
RoHS compliant, halogen-free, MSL1
BME688.pdf
BME688 AI-Studio Manual.pdf
and high-accuracy pressure, humidity and temperature sensors. It is housed in a robust yet
compact 3.0 x 3.0 x 0.9 mm³ package and especially developed for mobile & connected applications
where size and low power consumption are critical requirements. The gas sensor can detect Volatile
Organic Compounds (VOCs) and other gases such as carbon monoxide and hydrogen in the part
per billion (ppb) range.
Additionally to all features of the BME680, the BME688 has a gas scanner function.
The new BME AI-Studio tool enables customers to train the BME688 gas scanner on their
specific application, like in home appliances, IoT products or Smart Home.
Package dimensions: 8-Pin LGA with metal
3.0 x 3.0 x 0.93 mm³
Operation range (full accuracy) Pressure: 300...1100 hPa
Humidity 0…100%
Temperature: -40…85°C
Supply voltage VDDIO 1.2 ... 3.6 V
Supply voltage VDD 1.71 ... 3.6 V
Interface I²C and SPI
Average current consumption 2.1 µA at 1 Hz humidity and temperature
3.1 µA at 1 Hz pressure and temperature
3.7 µA at 1 Hz humidity, pressure and temperature
90 µA at ULP mode for p/h/T & air quality
0,9 mA at LP mode for p/h/T & air quality
3,9 mA in standard gas scan mode
(gas scan mode & scan rate can be optimized on applications with BME AI studio)
Gas sensor
Response time (τ 33-63%) < 1 s (for new sensors)
Sensor-to-sensor deviation +/- 15% +/- 15
Power consumption < 0.1 mA in ultra-low power mode
Output data processing direct output of IAQ: Index for Air Quality
Humidity sensor
Response time (τ0-63%) 8 s
Accuracy tolerance ± 3 % relative humidity
Hysteresis ≤ 1.5 % relative humidity
Pressure sensor
RMS Noise 0.12 Pa (equiv. to 1.7 cm)
Sensitivity Error ± 0.25 % (equiv. to 1 m at 400 m height change)
Temperature coefficient offset ±1.3 Pa/K (equiv. to ±10.9 cm at 1°C temperature change)
RoHS compliant, halogen-free, MSL1
BME688.pdf BME688 AI-Studio Manual.pdf