Hello Karthik, The LPF filter in the ADS1298EVM is set up as an anti-aliasing filter, which does not need to be in the bandwidth of interest. Additionally, using larger value components has the potential to introduce more common-mode noise to the system, since the varying tolerances of these components affect the total noise on the line. The RLD non-inverting amplifier is designed to drive a waveform that is equal and opposite to the common mode noise detected on the other electrodes in order to cancel it out. Increasing the gain of the RLD amplifier will not reduce the common mode noise, since it will no longer be equal to the common mode signal on the other inputs. Regards, Payton
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