buddypoor wrote on Jan 13th, 2012, 5:12am:Hi Tosei,
did I understand well that oscillations could be observed only during ramping the supply voltage?
In this case, I wouldn't rely to much on circuit simulation because many models behave unrealistic for supply voltages that not in the "correct" range (as supposed by the model maker) - in particular when they are not constant.
hi buddypoor,
Yes, you got it right: oscillations could be observed during ramping of supply voltage and were slowing damped till they fade away (as if the circuit was barely stable).
I agree also the models behave unrealistically under those type of transients, but I want to make sure it will not create any oscillation in real silicon.
Anyways, it seems from latest sims that the bias currents are the one to blame in my set up, which aligns with Vladislav suggestions.
Best
Tosei