What is the latency of the ECG and PPG signals of the MAXREFDES101?
The PPG has a longer latency due to the fact that it has to get processed and output by the MAX32664 sensor hub. The end timing is as follows:
ECG: Simply the time it takes for the SPI bus message from host to AFE.
PPG: time for I2C from host to sensor hub + 40msec to get processed and output by the sensor hub + SPI message time from snesor hub to AFE.