Color: Green The photodiode generates a current proportional to the amount of light irradiated to the active region. Transimpedance amplifiers are required in most measurement applications to convert photodiode current into output voltage. Figure 1 shows the schematic diagram of the circuit. Photodiode is one of the most commonly used sensor types in many optical measurements. Applications such as absorption and emission spectrum, color measurement, turbidity, and gas detection rely on photodiodes to achieve precise optical measurements. Material: PCB, Weight: 0.00771617917 pounds, Manufacturer: Hipzeepo