Dir1703-pcm1710u-??

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last schematic

opa637 did give oscillations in the filter although not always audible.
I changed it to OPA627 (thanks for mentioning jean-paul)
and signal is clear on the oscilloscope.

Changed the crystal to 16.9344MHz (2dB more Dynamic range).

Dir1703 doesn't need reset always.
I think it is plug'n'play if there is spdif input
when you power on the circuit.

Attached is the last schematic.

makisb
 

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