/diy/ - Do It Yourself

These are some ADC values that I'm storing in a FIFO. I know that the noise (the little jumps/deviations from the straight line) shown here is not actually from the ADC, so I'm thinking it has something to do with the synchronization as it's being read into the FIFO. Does that seem likely given this data? I thought bit synchronization problems would only mess with the bits that are being changed from one clock cycle to the next, but this seems to be flipping other bits.