Tool/software:
Greetings,
We are conducting research and development related to pulse oximetry and are using your AFE4490 pulse oximetry product.
We would like to inquire about the actual bias voltage applied to the photodetector during the operation of the AFE4490 (INN,INP).
Specifically, we would like to confirm whether 0.9 V is applied across the photodetector's anode and cathode, or if both terminals operate at 0.9 V, resulting in a zero-bias condition for the photodetector.
If the photodetector operates at zero bias, does this mean that only photodetectors capable of operating in zero-biased conditions can be used with the AFE4490?
Thank you in advance.
Best regards,
