I made a TAS3251 PCBA.
The I2S input of TAS3251 is connected from another analog to I2S board.
But the output sound of TAS3251 is noisy.
When I power off, it will be normal before voltage drop to zero (about a second)
I use switch power supply, the Vin is 27V
Does TAS5251 need to separate analog and digital ground ?