ADT2550FXX General Description The ADT2550FXX is a miniaturized low current receiver IC for infrared remote control system. It has a wide voltage operating such as 2.7~5.5V, a high sensitivity. Wide operating voltage is very suitable to the hand-held battery operating systems, e.g., electrical toy. It has 5 trimming cells for the fined adjust of center frequency. These ICs are capable of accepting a photodiode directly and include many excellent circuit such as a high gain initial amplifier, a gain control amplifier, a limiter, a band pass filter, a detection circuit, two comparator circuits, gain control circuits, integrator circuits, a waveform shaping circuit assembled on a single chip. Features • Wide Operating Supply Voltage 2.7V ~ 5.5 V. (Min. 2.1V operating ) • Low current consumption ( Typ. 370uA@3V , Typ. 430uA@5V ) • Maximum interference safety against VCC noise & light noise • No external components necessary • Internal filter for a high frequency lighting fluorescent lamp • Output active low • Carrier frequency 36 / 37.9 / 40KHz available * This specifications are subject to be changed without notice http://www.ad-tech.co.kr