The world's smallest mobile phone illumination sensor MM1789 display

Freunt Japan developed a size of 1.6mm * 1.3mm * 0.65mm, illuminance sensor "global minimum MM1789", and the reference display in the "MITSUMI SHOW 2006". Have a close eye sensitivity (visibility) spectral sensitivity (Spectral Sensitivity). Can be installed on the device, according to the external light to adjust the brightness of the display. Mainly for mobile phones and other products.

The product integrates the photodiode and amplifier into a single chip. Compared to the company's old product "MM1616" of the external dimensions (3.2mm * 2.4mm * 1.1mm), width, length and thickness are only about half. Because the size of the chip is reduced, the area of the photodiode is small, and the sensitivity is reduced to about half of the old product. However, the use of mobile phones can get enough sensitivity. The number of terminals is 2, the old product is 3.