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AFE4405EVM: sampling rate

Part Number: AFE4405EVM
Other Parts Discussed in Thread: AFE4405

Hi,

I am capturing PPG data using AFE4405EVM board. By the way, the minimum sampling rate is 61.1Hz set by the AFE4405EVM GUI.

Why this restriction is set in the EVM GUI ? I am considering evaluating 40Hz ~ 60Hz of PPG data. Are these sampling rates not good for calculating HR, RR-interval, etc. ?

Regards,

Konan