I am now testing TAS5634EVM and found periodic noise on the OUTA~OUTD.
Test condition
- PVDD 50v
- Board Configuration : BTL
- Audio input : no
- ppc 1.1.6 : Do not run
- proving : oscilloscope ch1: OUTA , ch2 OUTB, math1: ch1-ch2
- Phenomenon
I found periodic noise on the math1(OUTA-OUTB) after RESET switch from Low to Valid, its voltage is 1.7Vpp and frequency 357khz
I found the same phenomenon when I input audio input via usb and run ppc1.1.6
Is it normal phenomenon or is some technical issue?
