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https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/651917/ads1292-how-to-get-high-cmr-whith-only-2-electrodes-solution-whith-ads1292
此解决方案用于AFE4900，因此接口电路是什么，如何向电极添加RLD信号，如图所示
