Infineon Technologies XENSIV™ PAS CO2 Sensor

Infineon Technologies XENSIV™ PAS CO2 Sensor is a solution to track the environment for improved health, productivity, and overall well-being. Measuring CO2 concentration, a key indicator of indoor air quality, permits us to optimize health, comfort, and energy efficiency. By leveraging photoacoustic spectroscopy (PAS), XENSIV PAS CO2 overcomes the size, performance, and assembly challenges of existing CO2 sensor solutions. The sensor comes in a very miniaturized module (14mm x 13.8mm x 7.5 mm3), four times smaller and three times lighter than its NDIR counterparts. This size enables more than 75% space-saving in user systems. In addition to its compact design, the XENSIV PAS CO2 produces high data quality via its superior accuracy (±30ppm ±3% of reading). It complies with the most stringent building requirements defined in regulations, standards, and certifications such as WELL, LEED, and ASHRAE 62.1. The Infineon XENSIV PAS CO2 achieves accuracy and meets the criteria set in indoor air quality standards and certifications.


  • Minimal form factor (14mm x 13.8mm x 7.5mm3)
  • Accurate and robust performance at ppm level (±30ppm ±3% of reading)
  • SMD package delivered in tape and reel
  • Advanced compensation and self-calibration algorithms
  • Various configuration options and interfaces (e.g., sampling rate, baseline calibration) and interfaces (UART, I2C, PWM)


  • Building automation with demand-controlled ventilation, air handler units, air exchanger, thermostats, smart lighting
  • Smart home IoT devices including thermostats, speakers, baby monitors, personal assistants, indoor air quality monitors, smart lighting
  • Agriculture, including greenhouse, indoor/vertical farming

PAS Principle Diagram

Block Diagram - Infineon Technologies XENSIV™ PAS CO2 Sensor


Intuitive Sensing Webinar

Infineon Technologies XENSIV™ PAS CO2 Sensor

Watch this webinar to learn how Infineon's XENSIV PAS CO2 sensor provides best-in-class performance to meet the challenges of accurate CO2 monitoring.

Publicado: 2021-08-12 | Atualizado: 2022-11-28