Hello
My customer is asking why output of TPA2015D1 is gradually increased even with fixed gain on from start-up.
I thought input might be cause of issue, but I found I can reproduce the issue on our EVM with AP audio analyzer.
Input: 1kHz 1 Vrms(UNBAL), Gain: 20dB(High), AGC: Open, Vin: 4.2V(Power supply), END pin low=>high at about 3 seconds during sweep
From my understanding, AGC pin open means disabling AGC function, but it looks gain is increasing just like AGC release on start-up.
I tried 10 times as below sweep graph, and it takes about 6~8 seconds to get proper gain. Is it normal operation?
Could you help me to explain this to customer?