I use ma12070 to make an audio amplifier and use pbtl mode. Normal operation after power on.
But when I configured the input mode to single ended RCA input, the speaker made a lot of noise. I changed the grounding mode, and the problem remains the same.
I wonder if it is wrong to configure the single ended input mode as shown in the figure below in pbtl mode?
But when I configured the input mode to single ended RCA input, the speaker made a lot of noise. I changed the grounding mode, and the problem remains the same.
I wonder if it is wrong to configure the single ended input mode as shown in the figure below in pbtl mode?
If the ma12070 cannot use single ended signal input in (pbtl mode),
I can't use ina134 because it needs dual power supply
Is there a differential audio receiver (single power supply)?
You don't need a differential audio receiver. You need a SE to balanced converter, powered by a single voltage.
And there you got it:
https://www.audiophonics.fr/en/prea...alanced-symetrizer-drv134-stereo-p-12571.html
And there you got it:
https://www.audiophonics.fr/en/prea...alanced-symetrizer-drv134-stereo-p-12571.html