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ADS1298 - Intermittent Noise

Other Parts Discussed in Thread: ADS1298

Hello,

I developed a board using the ADS1298 based on the TI MDK reference design. I am seeing some interesting behavior occur intermittently shown in the screenshots below on V3. It's not contained to a particular lead and it doesn't occur regularly. Signals below taken from a test with electrodes attached to myself. The signal usually recovers but I obviously want to resolve this issue. I'm having difficulty finding the source of this behavior, Has anyone seen something like this and have a suggestion for how to test & resolve? Thank you.