I've been working on the compensation for a classic three stage SS PA amp. I seem to have eliminated ringing and over shoot, although I see this funny little squiggle on the lagging edge of the wave form. It's worse on the negative side, and barely presents itself on the positive side. I'm having trouble figuring out where it arises from. The rise rate of the amp in simulation seems to be about 15V/us. The bandwidth is set for about 200kHz.
Here are some screen shots of the step response:
The full step:
The positive leading edge:
The negative lagging edge:
The circuit is simple and minimal:
Here are some screen shots of the step response:
The full step:
An externally hosted image should be here but it was not working when we last tested it.
The positive leading edge:
An externally hosted image should be here but it was not working when we last tested it.
The negative lagging edge:
An externally hosted image should be here but it was not working when we last tested it.
The circuit is simple and minimal:
An externally hosted image should be here but it was not working when we last tested it.
Last edited: