DAC based voltage supply (current buffered) with current monitoring: shorting/instability?
I'm not seeing any feedback on the LT6105.

With no feedback, it's acting something like a comparator, rather than a linear amplifier. Is this the intention?

FWIW, "real-world"/non-ideal op-amps have a "DC Offset Voltage" from the two inputs not being perfect mirrors of each other.
In many designs, this is considered negligible as feedback negates much of it, or the input voltages/swings are large enough to mask it.
However, in your circuit, with an open Vout, the inputs should in theory be seeing perfectly identical inputs, so this offset can cause a false reading on the output.

Would adding negative feedback to the LT6105 be a possible option here?

Here's a "spitball" idea that should give the LT6105 about a 100:1 voltage gain for the ADC to sense. Can you let us know if this works for you, or what constraints you have that prevent its use?







simulate this circuit &ndash; Schematic created using CircuitLab