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Si1132 Ultraviolet (UV) Index and Ambient Light Sensor The monolithic Si1132 sensor integrates multiple photodiodes, an analog-to-digital converter, a signal processor and a digital I2C control interface in an impressively small 2 mm x 2 mm clear QFN package. This UV Index and ambient light sensor enables fitness wrist/arm bands, smart watches, and smartphones to differentiate by measuring UV sun exposure. Customers can benefit by receiving a warning of when their current UV exposure is unhealthy or to determine their cumulative UV exposure during exercise. This measurement is critical for people with an elevated risk of sunburn or anyone who is concerned about their sun exposure. A X Visible VDD INT SCL SDA ADC U
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