This circuit could work?

[Morph1214]

this is a MIC preamp based on PGA2311, i would love suggestions about this design S2

 

[Speedskater]

XLR pin1's are:
a] Shield / metal chassis
b] 48 Volt common

They are not audio circuit common

 

[Morph1214]

Thanks for answering. These are just details of the diagram, the real assembled system won't be like that, but thank you anyway

 

[Citizen124032]

Datasheet of PGA2311?

 

[Mark Tillotson]

Where are the decoupling capacitors on VA+ and VA- and +48V?

 

[Morph1214]

Thanks for answering, this is another thing omitted on this diagram, I made the post for people to say what could be wrong with the signal path.

 

[analog_sa]

this is a MIC preamp based on PGA2311, i would love suggestions about this design S2

It's based on SSM2019. To call a mic pre based on a potentiometer sounds really weird.

 

[Morph1214]

The whole idea is to make a mic muting system that is clickless, I've saw some designs for just muting with and without zero-crossing, but then I found PGA2311 wich can do the mute and a little more, everything digitally, then most of the circuit was based somewhat "around" PGA2311