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Old 6th February 2013, 04:46 PM   #1
graygem is offline graygem  United States
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Join Date: Jul 2010
Default DAC input selector circuit help needed

I have a small DAC that uses the UDA1352 audio DAC ic. Right now I just have a switch between the coaxial and toslink input to select which one to use. I would like to add a circuit that would automatically select which input is connected. The UDA1352 has a LOCK pin that goes high when PCM data is detected. My thought was to use the Lock into a circuit that would toggle high and low, into a analog switch IC. When the Lock pin was enacted, the circuit would hold the output either high or low. That would keep the input on. Not sure if I explained this right. Is there such a integrated circuit that will work like this?
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