Si1132

Si1132 UV INDEX AND AMBIENT LIGHT SENSOR IC WITH I2C INTERFACE Features  Integrated UV index sensor  Industry's lowest power Digital UV Index register that can consumption be read through I2C interface 1.71 to 3.6 V supply voltage Factory calibration to address < 500 nA standby current part-to-part variation Internal and external wake support  Integrated ambient light sensor Built-in voltage supply monitor and 100 mlx resolution possible, power-on reset controller allowing operation under dark  I2C Serial communications glass Up to 3.4 Mbps data rate 1 to 128 klx dynamic range Slave mode hardware address possible across two ADC range decoding settings  Small-outline 10-lead 2x2 mm Accurate lux measurements with QFN IR correction algorithm  Temperature Range –40 to +85 °C Applications  Fitness/health electronics  Smart watches  Smartphone handsets Description  Tablets  Portable consumer electronics  Display-backlighting control The Si1132 is a low-power, ultraviolet (UV) index, and ambient light sensor with I2C digital interface and programmable-event interrupt output. This sensor IC includes an analog-to-digital converter, integrated highsensitivity visible and infrared photodiodes, and digital signal processor. The Si1132 offers excellent performance under a wide dynamic range and a variety of light sources including direct sunlight. The Si1132 can also work under dark glass covers. The photodiode response ...