ROHM BH1745NUC is a digital color sensor IC with I2C bus interface. This IC senses Red, Green and Blue light (RGB) and converts them to digital values. It has a high sensitivity, wide dynamic range and excellent Ircut characteristics. This makes it great for obtaining illuminance and color temperature of ambient light for adjusting TV LCD backlights, mobile phones and tablet PCs. It's possible to detect a very wide range light intensity.