I need to control (with a MCU) a pressure regulator that takes 0-10V as an analog control signal.
On my MCU board, I'll have 24V and 5V supplies.
My two thoughts are:
Digital Potentiometer as a resistor in a voltage divider from the 24V source. Cheap, but not sure how to apply the terminal voltage ratings. Obviously it will be the resistor closer to GND. I'm assuming it must tolerate 10V across the pot, or should it be 24V?
DAC with separate supplies, though they are expensive an I can't find many (if any) that will handle that high voltage.
Any Chip suggestions from the experienced?