Hello,
I am wondering what can be done to eliminate the noise in the audio output with my circuit below.
The main DSP is from Airoha and I coupled it with PAM8403 driver, and I used a passive differential to single ended
bridge to connect the audio. It is not working when the P and N nodes of audio are connected both.
Here's my oscope capture for Left and Right (single ended only) input to PAM.
1kHz at 0dBm played thru BT streaming.
I am wondering what can be done to eliminate the noise in the audio output with my circuit below.
The main DSP is from Airoha and I coupled it with PAM8403 driver, and I used a passive differential to single ended
bridge to connect the audio. It is not working when the P and N nodes of audio are connected both.
Here's my oscope capture for Left and Right (single ended only) input to PAM.
1kHz at 0dBm played thru BT streaming.
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