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Question about an IRDA transceiver

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oltean

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I got an IRDA transceiver from an old phone. On it is writed 0103. I belive is from agilent but I do not know. Can you help my.
 

nikifena

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Try to find power suppply, gnd and anode from gsm's pcb, and then there is no problem to experiment to find tx and rx
ps: anode is protected by some resistor, connected to the power supply
 

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