Cambridge CMOS offers IR sources for gas sensing

Cambridge CMOS offers IR sources for gas sensing

New Products |
By Peter Clarke

They are designed to operate across the wideband IR range (2 to 14-micron wavelength) and can be used to continually sense carbon dioxide, and ethanol vapors in non-dispersive infrared (NDIR) systems at low power.

The CCS11x range incorporates a novel plasmonic structure, based on a layer of metallic dots with a defined geometry that creates a resonant effect and increases optical emission. The devices also use a patented micro-hotplate design to deliver high optical emissions across a broad range of IR wavelengths with low drift. The plasmonic structure and the micro-hotplate are fabricated using a standard CMOS process.

The heater temperature can be controlled by appropriately adjusting the current or the supply voltage. It can be powered with low DC drive voltages and using pulse-width modulation (PWM).

Key product parameters for the CCS11x µBright family of infrared sources, Source: Cambridge CMOS Systems Ltd.

The CCS112A, CCS113A and CCS114A are available for sampling now in TO packages (TO46 and TO39) and available in volume in 3Q16.

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