HD44042 (TV) infrared remote control receiving preamplifier circuit

Published:2011/8/1 3:03:00 Author:Christina | Keyword: TV, infrared, remote control, receiving, preamplifier circuit | From:SeekIC

The HD44042 is designed as the infrared remote control receiving preamplifier circuit that can be used in the TV application. The internal circuit is composed of the main amplifier, bandpass filter, clock generator and the comparator. Features It uses the CMOS integrated circuit, the power consumption is low (when the VDD=7V, the typical value is 21mW), the gain is high (92dB).It has the variable capacity filter (the center frequency is 41.4kHz, the gain is 10dB).The external resistance can change the distance between the transmitter and the television.8-pin dual-row DIP package.



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