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
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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