Request InfoHamamatsu CorporationThe S13645-01CR photo IC combines a 16-element silicon avalanche photodiode (Si APD) array and a preamplifier into a single, compact package. With its peak sensitivity around 840 nm and high-speed response (200 MHz), this device is suitable for distance measurement. Other features include excellent noise and frequency characteristics, a built-in DC feedback circuit that reduces the effects of background light, and a gain switch function for low or high gain. 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