Noise primarily comes from the transducer, transmission channel, and AFE. MAX35104 is a highly precise AFE and its noise is negligible compared to the other two; a proper transducer must be selected along with reasonable channel design to reduce the noise. In addition, we can configure the bandpass filter of the chip to remove a considerable part of the noise, and adjust the bias of the comparator and the measurement delay to reduce the impact of noise further.