Gas Sensor BME690
4-in1. Air quality. Specific gas sensing.
BME690
Environmental sensing with Artificial Intelligence
A dog's nose has up to 220 million olfactory cells. Sniffer dogs have an incredible nose and can even sniff out forbidden substances. Inspired by the animal's super-sensitive organ, the BME690 detects spoiled fruit or bad breath, for example. The BME690 is further developed on BME688, with increased robustness for use in environments with high condensation levels. It can measure gas, humidity, temperature and air pressure simultaneously and is the world's smallest 4-in-1 air quality sensor (3.0 x 3.0 x 0.93 mm³).
The BME690 is ideal for monitoring indoor air quality and can detect Volatile Organic Compounds (VOCs), volatile sulfur compounds (VSCs) and other gases such as carbon monoxide and hydrogen.
BME690 has a gas scanner function also. 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 BME690 gas scanner on their specific application, like in home appliances, IoT products or Smart Home.
Alignment to WELL/RESET standards for indoor air quality
Usage in high condensation use cases
Reduced power consumption optimal for battery operated devices
Technical data
| Parameter | Technical data |
|---|---|
|
Parameter
Package dimensions
|
Technical data
3.0 x 3.0 x 0.93 mm³
8-Pin LGA with metal |
|
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 (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)
|
|
Parameter
Average typical current consumption
|
Technical data
2.1 µA at 1 Hz for h/T
3.1 µA at 1 Hz for p/T 3.7 µA at 1 Hz for h/p/T 50 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 |
|
Parameter
Gas sensor
Sensor-to-sensor deviation (IAQ) IAQ Operating modes Major sensor outputs |
Technical data
± 15% ± 15 IAQ 3 sec (LP) and 300 sec (ULP) Index for Air Quality (IAQ), bVOC- & CO2-equivalents (ppm) |
|
Parameter
Humidity sensor
Response time Accuracy tolerance Hysteresis |
Technical data
1 s (τ0-63%) ± 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 % ±1.3 Pa/K (equiv. to ±10.9 cm at 1°C temperature change) |
|
Parameter
Temperature sensor
Absolute accuracy |
Technical data
±0.5 °C (0-65°C) |
