Part Number: TLV320AIC3110
Hi,
my customer is using this device as below:
They use only SPRM and SPRP for both speaker and earphone.
When earphone is not connected, pin3/6 and pin4/5 are connected to one speaker.
When earphone connected, speaker is unconnected and pin3/6 connect to GND through left earphone, pin4/5 connect to GND through right earphone.
Now we can hear small noise when the volume is adjusted to maximum when no audio source input to I2S and earphone connected.
But this noise is absent when using a speaker, which I think is cancelled since it's differential signal on speaker.
1. What's the risk of connecting earphone to speaker output of the device (SPRM, SPRP)?
2. Is it possible that we remove the noise through software? How can we achieve it?
Since I'm not familiar with audio device, please tell me if any more information is needed to solve the noise problem.