Quote:1) does my setup for measuring loop gain with iprobe look right to you?
Yes, as long as the two feedback resistors are part of the final circuit.
Quote:2) I have seen a lot of people use the LC network setup with AC source above to measure loop gains of LDOs, bandgap references etc. Am I right in saying that you don't recommend it and stb is the right way to go about things?
Correct. And now you have seen an example of why it is not recommended.
-Ken