I’m posting here cause this is the only thread I could get access to.
Please help. I’ve just put together a prototype for a board I’m making based on a g120. Everything about it seems ok but the noise on the 3v3 rail is completely ridiculous and I can’t nail it down. It’s just below 1V and is at 28khz! I’m NOT[edit :)] ruling out that I’ve stuffed this prototype somehow. But the noise is only there when the g120 is running? If I press the reset button for the g120, it’s fine for a few seconds and then starts again? any ideas where I should go next?
Thanks in advance.
Update… I think it is something in my power supply design. If I remove the g120 and simulate the approximate load. I get almost as evil a result.