Optoelectronics

Integrated sensor detects UVA & UVB light intensity

4th May 2016
Nat Bowers

An integrated UV light sensor for the detection of UVA and UVB light intensity, the VEML6075 from Vishay Intertechnology, features Filtron technology for high UV sensitivity and linearity. The device incorporates an IC with five sensitive areas and signal processing in a compact 2.0x1.25x1.0mm surface-mount package while offering an I²C bus interface for simple operation.

The UV sensor saves space and increases design flexibility by incorporating the circuitry needed for consumer, medical and industrial applications in one compact unit.

The VEML6075 offers individual UVA and UVB channels with 16-bit resolution and excellent sensitivity of 365 and 330nm, respectively. Designed to convert solar UV light intensity to digital data, the sensor provides a measurement of signal strength and allows for true UVI calculation in smartphones, smart watches, sport bands, notebook computers and weather stations. The UVI value indicates how much UV radiation will reach human skin when outside, allowing precautions to be taken to avoid sunburns in the short term and skin cancer in the long term.

The VEML6075 delivers excellent performance under long-term solar UV exposure and offers high temperature compensation stability from -40 to +85°C. The device features a shutdown mode that reduces power consumption to 800nA and an operating voltage range of 1.7 to 3.6V, which is suited for portable electronics and wearable devices.

Offered in a lead-free, 4-pin OPLGA package, the VEML6075 is RoHS-compliant, halogen-free and Vishay Green. Samples and production quantities of the UVA and UVB light sensor are available now, with lead times of 12 weeks for large orders.

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