We used two TAS5805M Audio amplifier in speaker project, one was used as bass (Address: 0x58) and the other as high pitch (Address: 0x5C). The data was exported through PPC3 and loaded during MCU initialization. The following problems were detected when sweeping frequency response curves:
1.The swept frequency response curve is not the same near the frequency division point after power off, sometimes the same as the last time, sometimes is different from the last time.
the curve is the same every time without disconnecting the power supply. The waveform as attached.
2.The test result as below:
(1)change the loudspeaker, the issue is still remain.
(2)After each boot, use the evaluation board (TAS5805M EVM) to load, and the problem is still the same.
(3) The swept frequency response curve is the same if only bass or treble is output separately after power off.
Attached is the PPC3 file with the issue detected.
