The gain of an ideal differentiator increases 20dB/dec - this means the gain increases as frequency increases. I'm wondering how high gain produces oscillations.
I've read so many times that negative feedback stabilizes the op amp but never quite get why the opamp needs stabilizing. I understand high gain is useless because a small input signal can saturate the output of opamp. Also I understand how the negative feedback reduces offset voltage, but that's it.
I don't get how high gain produces oscillations.