Tool/software:
Team,
My customer is facing LM98725 noise issue on AD conversion result of OSx as the picture below. 
There is 10-20 LSB glitch in the middle of the plot, but OSx is almost flat like blue trace of the picture below.
Please note that the both of ADC result plot and OSx signal were not taken simultaneously, but customer explains the glitch on OSx signal corresponding to AD conversion have never seen.
Could you please let me know what is the possible cause and how this can be improved?
Here is customer's condition. If there are any missing information, let me know.
- 1.2V mode
- Source follower disabled (Page0 Addr3 = 0000 0000)
- DC coupling
- Two channel mode
- Max sample rate = 30MSps, ADC running rate 60MSps)
Thanks,
Nobuhiko Wasa
