Built-in DAC driver circuitry for Ard. Due Rev. 3.0.

the blog about the DAC offset of the Due is quite resonable. The heaters are monitored via PID algorthm, and thermocouple.

The 3.3 volts of the DAC's of the Due are enough to power the heaters to 1000K. Due to the tiny size of them.

But what I really can'tunderstand if there is DAC' and it does not have any bad offset which need to be get rid of, which way one should add the op-amps?.