APDs are photodiodes with internal gain produced by the application of a reverse voltage. They have a higher signal-to-noise ratio (SNR) than PIN photodiodes, as well as fast time response, low dark current, and high sensitivity. Spectral response range is typically within 200 - 1150 nm.

Our modules take the complexity out of operating an APD with a low-noise amplifier circuit, high voltage power supply, and temperature compensation circuit integrated into a compact solution.