Description
Infineon has leveraged its knowledge in sensors and MEMS
technologies to develop a disruptive gas sensor for CO2 sensing.
The XENSIVTM PAS CO2 is a real CO2 sensor combining NDIR
technology with Infineon’s high SNR MEMS microphones,
allowing for state-of-the-art accuracy in an exceptionally small
form factor.
The sensor is based on the photoacoustic spectroscopy (PAS)
principle, where CO2 molecules within the sensor cavity absorb
infrared light, generating small pressure changes that are
detected by an acoustic detector. CO2 concentration is then
delivered in the form of a direct ppm readout thanks to the
integrated microcontroller. Highly accurate CO2 readings are
guaranteed.

Features
• Operating range: 0 ppm to 32000 ppm
• Accuracy: ± 50 ppm ± 5% of reading between 400 ppm and 3000 ppm
• Lifetime: 10 years for indoor mission profile
• Interface: I2C, UART, and PWM
• Package dimension: 13.8 x 14 x 7.5 mm3

Potential applications
High accuracy, compact size, and SMD capability make the XENSIVTM PAS CO2 sensor ideal for
indoor air quality monitoring solutions in the market with numerous potential applications.
• HVAC (Heating, Ventilation, Air Conditioning)
• Home appliances
• Smart home IoT devices
• Agriculture/ Greenhouses
• In-cabin air quality monitoring unit