红外遥控芯片外文文献.pdf

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In-gain amplifier circuit.
In common CX20106A, etc PC1373H muon infrared receiving special amplifier
circuit. In recent years both amateur or formal products, mostly using infrared
receiving head finished. The head of infrared receiving product packages generally
has two kinds: one kind USES sheet shielding, A kind of plastic packaging. There arethree pin, namely the power is (VDD), power negative (GND) and data output (VO or
OUT). Infrared receiving head foot arrangement for types varied, manufacturer's
instructions. Finished the advantages of infrared receiving head is not in need of
sophisticated debugging and shell screen, use rise as a transistor,very convenient. But
when used in the infrared receivingattention finished first carrier frequency.
Infrared remote common carrier frequency for 38kHz, this is transmitted by
using 455kHz TaoZhen to decide. At the launch of crystals were integer frequency,
frequency coefficients, so commonly 12, so 455kHz ÷ 12 hundredth kHz 38kHz
hundredth 379,000. Some remote control system adopts 36kHz, 56kHz, etc, general
40kHz launched by the crystals of oscillation frequency to decide.
Infrared remote characteristic is not influence the surrounding environment and
does not interfere with other electric equipment. Due to its cannot penetrate walls, so
the room can use common household appliance of remote control without mutual
interference, Circuit testing is simple, as long as given circuit connection, generally
does not need any commissioning can work, Decoding easily, can undertake multiple
remote control. Because each manufacturer produces a great deal of infrared remote
application-specific integrated circuit, when need press diagram suo ji. Therefore, the
infrared remote now in household appliances, indoor close (less than 10 meters) in the
remote control is widely us