So I'm looking into the stm32f469 series of chips (datasheet here), and see if I can play good audio with one with the build in DAC. To my knowledge, the built-in ones on chips usually aren't that great, but with 12 bits of resolution, I'd like to give it a shot. The problem comes in with if it can drive headphones or not:
Down on page 163/219, it says that with the built-in buffer (reportedly included to be able to drive loads) the minimum impedance is 5 kOhm, which seems extraordinarily high. I'd be using it with earbuds, and I've never seen cheap earbuds listed with any more than 50 ohms impedance. With the buffer disabled, it reports a maximum of 15 kOhm, but I'm worried that if it's meant to be in the kOhm range it might not handle earbuds too well.
Am I reading this completely wrong and it can drive a set of earbuds or will I be looking into an external audio chip?