Hey, #Electronics folks!
Has anyone seen such an output for a ramp coming out of a DAC?
This is produced by a simple counter counting from 0 to 4095 and then wrapping.
The sharp dips are absolutely stable and deterministic. They occur at bit switches but I don't seem to get my head around why.
Identical curves on two different DAC peripherals on the same μC and even across different chips/boards (I'm almost certain it's a software problem).
@cweickhmann The DAC is built in in the uC? What's the uC, and what's the specs on the DAC? By the look of it, you have a fairly badly non-monotonic DAC:
https://www.planetanalog.com/dac-non-linearity-non-monotonicity-and-midpoint-glitches/
https://www.planetanalog.com/dac-basics-part-3-static-specifications/
