Other Parts Discussed in Thread: TPA3251EVM
Hello. In this paper "Star" grounding configuration shows significant improvements for THD+N parameter.But as i see, TPA3255 PCB rev.A does not have this feature, however TPA3251EVM does, but only halfway (no separate AGND for 12V and VMID). I would like try to implement this technique in my own design using TPA3255 and i got following question: In paper separate grounding used not only for analog inputs but for 12v supply and VMID supply also. Does this mean, that i should ground 15V supply (wich then creats 12V) also separately to AGND or its should stay at Power GND, how can i make separate AGND for 12V supply then? I really sorry for roughness of the picture, but i hope you can better see what i mean.