Create the finest wearable electronics utilizing the most sensitive photodiode
In wearable devices like smartwatches, chest straps, wristband, smart rings, etc. both high accuracy measurement and long battery lifetime are needed to satisfy the end customers. Among all other components, photodiode is the key sensor to catch the light signal reflected from the skin. Therefore, the performance of the photodiode determines the quality of raw data regardless of the software AI algorithm used afterwards. One of the most important parameters of photodiode is sensitivity. Higher sensitivity with given noise means higher SNR (signal noise ratio) resulting in more accurate measurement capability to detect smaller signals which were invisible before.