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The Vishay TSOP381 series are miniaturized receiver module for infrared remote control systems. A PIN diode and a preamplifier are assembled on lead frame, the epoxy package contains an IR filter. The demodulated output signal can be directly connected to a microprocessor for decoding and the device are optimized to suppress almost all spurious pulses from energy saving lamps like CFLs.

Very low supply current
Photo detector and preamplifier in one package
Internal filter for PCM frequency