Hi TI,
for TAS5630B it is written in the datasheet that the PSRR is 80dB. But for which frequencies is this? I have tested the sensivity by manually changing the supply voltage and it works fine; no change in audio output level. But what if audio frequency will be imposed on the supply line when two TAS5630B are working in parallell in PBTL mode and they have common power supply and leads? Could this cause crosstalk and be audible from the amp that have no audio input when the other have high output; f,ex. 1kHz.?
On the functional block diagram is a feedback loop. Does this compensate for supply changes? What is the bandwidth of this? It would be helpful if you published the PSSR vs. frequency.
best regards
Trond Inge Wang
