CCS801 Ultra-low power multi-gas sensor of Cambridge CMOS Sensors

Cambridge CMOS Sensors (CCS) micro-hotplate technology provides a unique silicon platform for the CCS80x range of Metal Oxide (MOX) gas sensors. These devices enable sensor miniaturisation, have ultra-low power consumption and provide fast response times due to the ability to heat the micro-hotplate very quickly.

CCS801 is an ultra-low power MOX multi-gas sensor for monitoring indoor air quality including Carbon Monoxide (CO) and a wide range of Volatile Organic Compounds (VOCs). CCS801 can be used as an equivalent carbon dioxide (eCO2) sensor to represent eCO2 levels in real world environments, where the main cause of VOCs is from humans.

The sensitivity of CCS801 to a target gas is optimised by adapting the supply voltage (VH) of the integrated micro-heater, and the gas concentration can be correlated to the change in resistance of the MOX sensing layer (RS).

VH can be set using a low-dropout (LDO) regulator or operated in pulsed PWM mode to reduce power consumption. The sensor resistance (RS) is determined using a series load resistor (RL), a reference voltage (VREF), and an output voltage (VOUT) read by an Analogue-to-Digital Converter (ADC).

The CCS801 multi-gas sensor is supported in a compact 2 mm x 3 mm DFN (Dual Flat No lead) package as standard. Other package options may be available on request. The inherent design of this sensor enables ultra-low power consumption for battery operated portable handheld devices.

For further information, check the following website: http://www.ccmoss.com/sensors