The parts were originally introduced by Cambridge CMOS Sensors and became part of the AMS offering on the acquisition of the company in 2016 (see AMS buys Cambridge sensor startup).
Major upgrades to the software libraries of the CCS801, an analog volatile organic compound (VOC) sensor IC, and the device firmware for CCS811, a digital VOC sensor IC, have reduced the initialization period from more than 48 hours to 60 minutes. Now an indication of the indoor air quality level via a relative value for total VOC (TVOC) or equivalent CO2 (eCO2) can be used almost immediately after initial power-on in the end product.
These performance updates to the CCS8xx family also extend the air quality indication range as follows: the maximum eCO2 value has been raised from from 8,194ppm to 32,768ppm; the maximum eTVOC value has been raised from 1,187ppb to 32,768ppb.
The software upgrade has been implemented on the existing hardware design of the CCS801 and CCS811, which are already widely used in home and building automation (HABA) applications.
“According to the US Environmental Protection Agency, there is growing evidence that indoor air can be more polluted and expose to a greater health risk than outdoor air pollution,” said Paul Wilson, senior marketing manager for environmental sensors at AMS, in a statement.
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