ADT2520BXX General Description The ADT2520BXX is a miniaturized 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 ~ 5.5V • Internal voltage reference circuit for wide operating built-in. • No external components necessary. • Suitable for minimum burst length of 6 pulses per burst. • Continuous codes ( <1ms pause time ) are acceptable. • Output active low. • Carrier frequency 37.9/56 KHz available * This specifications are subject to be changed without notice http://www.ad-tech.co.kr