Can STM32G4 DAC be use along with internal OPAMP to connect to headphone directly ?

[Sgupt.1]

I want to use the STM32G4 DAC along with its internal OPAMP to connect to the Headphone jack directly without the need for an audio IC, is it possible ?.

This is my first time implementing such type of function hence I am unaware of the details or benefits each approach provide. Please help me out.

[Peter BENSCH · Accepted solution]

Welcome, @Sgupt.1​, to the community!

Well, the internal operational amplifier is designed more for measurement tasks, as can also be seen from the electrical characteristics: a drive current of 0.5mA at 3.3V is not really an output with "booooom".

Use a simple external amplifier or op-amp instead, like e.g. the TS482 or any other from the selection.

Good luck!

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

/Peter

[Sgupt.1]

Hello Peter,

Thanks for your guidance, I will follow your advise and design accordingly.

Regards,

Shankul Gupta