UPCI490HA （TV) infrared remote control receiving signal processing circuit

Published:2011/7/21 3:11:00 Author:TaoXi | Keyword: TV, infrared, remote control, receiving, signal, processing circuit | From:SeekIC

The μPCI490HA is designed as one kind of infrared remote control receiving signal processing circuit that can be used in the TVs. The internal circuit is composed of the shaping circuit, the detection circuit, the bandpass filter, the limiting amplifier and the automatic level control (ABLC) circuit. The function of it is to pretreat the infrared remote control receiving signal and demodulate out the serial pulse signal. Features Low power supply voltage, the typical value is 5V.Low power comsumption, when the power supply voltage is 5V, the power comsumption is 9mW.The high receiving sensitivity. It has the power voltage stabilization circuit.It has the filter. The center frequency fo is 30-60kHz (the typical value is 38kHz).The circuit has no electrical inductance to avoid the influence of the magnetic field.8-pin single row DIP package.



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