CJMCU-101 is an integrated chip built-in photodiode and transimpedance amplifier , the output voltage increases linearly with the light intensity . Amplifier is a single supply or dual power supply design , so can be used for battery-operated devices. Integrated photodiode and transimpedance amplifier on a single chip , discrete design, can reduce common problems, such as leakage current error , and since the gain peak noise caused by stray capacitance . And photodiode 0.09 * 0.09inch work in the photoconductive mode , to have a very good linearity and low dark current OPT101 working voltage of 2.7 to 36V, quiescent current of only 120uA .. do not need infrared .