PCM1704 to PCM63 Converter BD

Since I have a PCM1702 to PCM63 converter board pcb, I have put a PCM1704 on same adaptor board for testing purposes.  The only difference is two supply pins +/-5V need to be reversed.  Thus I do cut trace and add two hard wires at the bottom of the board to fit the supply reverse for PCM1704 DAC chips.

For Capacitor, I use Panasonic FC and also Wima MKS film capacitor for supply decouple as in the pictures.

For PCM1704, the noise floor is a bit lower as you can see from the FFT measurement.

D1V33 FFT with PCM1704

D1V33 FFT with PCM63 lin

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