Hello Folks,
What is your favorite DAC if you have to set a dozen or more DC voltages via a serial bus? Of course, ideally it should be cheap, multi-sourced, available from a couple of big suppliers (ahem, no vaporware...). 8-10 bits ok, or more. External ref preferred unless the internal one is really good. Speed does not matter at all.
The bus type is still open. Guess I2C is favored for non-star architectures but in the end it doesn't matter much as long as the protocol is easy on the SW guys.