4-in-1. Air quality. Specific gas sensing.
Gas Sensor BME688
BME688
Environmental sensing with Artificial Intelligence
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.
Relative humidity barometric pressure
Excellent temperature stability
Humidity
Gas sensing
Technical data
| Parameter | Technical data |
|---|---|
|
Parameter
Package dimensions
|
Technical data
8-Pin LGA with metal
3.0 x 3.0 x 0.93 mm³ |
|
Parameter
Operation range (full accuracy)
|
Technical data
Pressure: 300...1100 hPa
Humidity 0…100% Temperature: -40…85°C |
|
Parameter
Supply voltage VDDIO
Supply voltage VDD |
Technical data
1.2 ... 3.6 V
1.71 ... 3.6 V |
|
Parameter
Interface
|
Technical data
I²C and SPI
|
|
Parameter
Average current consumption
|
Technical data
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) |
|
Parameter
Gas sensor
Response time (τ 33-63%) Sensor-to-sensor deviation Power consumption Output data processing |
Technical data
< 1 s (for new sensors) +/- 15% +/- 15 < 0.1 mA in ultra-low power mode direct output of IAQ: Index for Air Quality |
|
Parameter
Humidity sensor
Response time (τ0-63%) Accuracy tolerance Hysteresis |
Technical data
8 s ± 3 % relative humidity ≤ 1.5 % relative humidity |
|
Parameter
Pressure sensor
RMS Noise Sensitivity Error Temperature coefficient offset |
Technical data
0.12 Pa (equiv. to 1.7 cm) ± 0.25 % (equiv. to 1 m at 400 m height change) ±1.3 Pa/K (equiv. to ±10.9 cm at 1°C temperature change) |
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