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• Avalanche photodiode (APD) module - φ max. 3 mm | Cxxxx series

Avalanche photodiode (APD) module - φ max. 3 mm | Cxxxx series

APD modules are high-sensitivity photodetectors that integrate an APD (avalanche photodiode), a temperature-compensation bias circuit (or temperature control circuit), and a current-to-voltage converter. Operating an APD module is easy since it works by simply supplying a DC voltage from an external source. The current-to-voltage converter uses high-speed, low-noise bipolar transistors and op amps optimally configured for signal readout from the APD. These APD modules also include a voltage controller with low ripple noise to detect light with high sensitivity.

APD modules contain a short wavelength or near infrared type Si APD. A temperature-compensation type with stabilized gain and a thermoelectrically cooled type are provided.Temperature-compensation APD modules keep the APD gain nearly constant using the high-precision temperature-compensation circuit. Thermoelectrically cooled APD modules maintain a stable gain by controlling the APD temperature at a constant

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