STM32U073RBT6 using DAC with Internal Vref (2048mV)

[pyoruya]

I am using the STM32U073RBT6. I want to output DAC using the internal reference (2048mV), but the output is based on VDD_A. Can you provide a specific example of how to use it?

Summary: How to output DAC using the internal reference (2048mV) to PA4 and opamp p_in.

[TDK]

> STM32U073RBT6

This chip does not have a separate VREF+ pin. Its VREF+ pin is tied internally to VDDA. Because of this, you cannot use VREFBUF on this chip.