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PCM1791 audio DAC undecoupled analog supply pins

Radosvet B.
Intellectual 490 points
Other Parts Discussed in Thread: PCM1791A

Dear TI audio IC designers,

 

The PCM1791A audio DAC has the analog supply pins: Vccc(15), Vccf(21), Vccl(20), Vccr(10).

Some of them as: Vccc(15), Vccr(10) stays undecoupled SEPARATELY to analog ground according to the PCM1791A typical application schematic.

Please refer to the figure 36, page34 PCM1791A datasheet.

1. Are those pins Vccc(15), Vccr(10) may be left undecoupled SEPARATELY to analog ground or not?

2. If they are should be decoupled, please give your recommendation about it.

 

Sincerely,

Alexander M.