Ilan, Thanks for reaching out on the E2E forums! Ryan is currently out of office, so expect delays in responses. In the meantime, I would recommend checking out this thread which talks about monitoring electrode status, and also includes a link to some app notes and references on the topic of electrode impedance: https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1383604/ads1299-electrode-contact-status There appears be an internal amplifier for the bias drive output, so I don't believe an additional buffer will be much help. Regards, Shane
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