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ADS1298R: Techniques to Improve Common-Mode Rejection - Faraday Shield

ADS1298R: Techniques to Improve Common-Mode Rejection

Krunal Shah97
Prodigy 145 points
Part Number: ADS1298R
Other Parts Discussed in Thread: ADS1298

Hi

We are trying to Improve Common-Mode Rejection and was referring to the application note Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier as attached. 

On-Page # 5, Figure 4 shows that " The system CMR can be further improved by incorporating the portion of the protection resistor RP2 inside the operational amplifier, asa shown in Figure 4. Now we are wondering here which amplifier author is referring to? Is there any external circuit we need to add or what cna you please help us to understand the same.

Thanks

Improving Common-Mode Rejection Using the Right-Leg Driver Amplifier.pdfKrunal Shah