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Professional to Consumer line level conversion & vice ve
HI all,
I am new to playing in the audio / video world so forgive me if I ask dumb questions! . Currently interfacing to a TI AIC23 ( http://focus.ti.com/lit/ds/symlink/tlv320aic23b.pdf ) audio codec with consumer line level inputs and outputs. What I need to do is make a PCB that will convert these 1Vrms I/O's to interface with Professional equipment (+4dbu). So I will need to PAD the input to the codec ( +4dbu Professional line level ---- -10dbv Consumer line level) right? 12db pad? and then I need to amplify the output of the codec (-10 dbv Consumer line level ---- +4dbu Professional line level) 12db amp. Here is the catch, I would like to be able to still also interface my AIC23 to consumer equipment or professional equipment and select the pad/amp via software control. Does anyone know of any ICs that may help me out to do this? maybe some digitally controlled pots? I need to fit this circuitry on a 3" x 3" board to fit in the box. Any suggestions are greatly appreciated thanks -Bill |
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