Bosch Sensortec

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), volatile sulfur compounds (VSCs) 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. In standard configuration, the presence of VSCs is being detected as indicator for e.g. bacteria growth. And the gas scanner can be customized with respect to sensitivity, selectivity, data rate and power consumption as well. The 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.

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)
RoHS compliant, halogen-free, MSL1

Order

Documents

Software

Tools


Order complete BME688 Development Kit (ready-to-use)

Order the pre-programmed and ready-to-use Development Kit for the BME688 sensor.

BMA400


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Smart home

Imagine you get up on a cold day and the bathroom is heated the way you prefer it. When you leave home, sensor-activated intrusion detection gives you peace of mind during the day. Our sensing solutions enable many smart home applications, enhancing your well-being.

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.
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