Hi, my first post, I am using this circuit to control a 4-20ma from my Arduino Due, the DAC0 is now damaged and not producing any voltage, DAC1 is a spare and is still functioning. There are 2 x 12v supplies in the design, I noticed the Gnds are mixed up with the GND on C45 should have been IGND. Is this the reason for the failure on DACO and should I have some sort of protection before the LM358 op amp? Any help would be greatly appreciated
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