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TIDA-01580: A question about ECG interface for AFE4900 in the reference design TIDA-0158

Part Number: TIDA-01580
Other Parts Discussed in Thread: AFE4900

Hello. Following is the ECG interface for AFE4900 in the reference design TIDA-01580.  I want to know the function of R54 and R55. Thank you for your reply.