Design of telephone line interface circuits using a two chip opto-coupler with LEDs integrated onto silicon chips

摘要: Design techniques are describes in which a telephone interface circuit or DAA can be realized using two silicon integrated circuits include opto couplers. The LED is formed on the chips technologies easily onto such as porous silicon, avalanching PN junction, forward biased deposited carbide organic material conjugated polymers, GaAs LEDs. light detector either junction based Schottky diode depending wavelength of transmitted by LED. placed single package with suitable optical links within package. This technology thus eliminates need for discrete couplers and transformers.