Connecting DAC to OPAMP in STM32F303K8

[Alexander Ray]

I'm curious if there is any way to configure the STM32F303K8 such that the OPAMP is driven by an internal signal, preferably one of the DACs.

I'd like to use it as a headphone amplifier or an amplifier for a tiny speaker, but not sure if it's appropriate for this.

Thanks!

[Uwe Bonnes]

Did you check the Peripheral interconnect matrix in the reference manual?

[Imen.D]

Hello Alexander,

I think that PA5 can be connected to OPAMP2 inverting input.

PA5 is also unbuffered DAC2 output.

I will check if any hw logic is preventing to enable both peripherals on the same hw gpio resource.

Kind Regards,

Imen.