SBAA843
July 2026
AFE159RP4
1
Abstract
1
Introduction
2
Principles of Respiration Impedance Measurement
2.1
Thoracic Impedance Measurement Model
2.2
Modulation and Demodulation of the Respiratory Waveforms
3
Noise Suppression in Respiration Measurement Circuitry
3.1
Respiratory Noise Test Method and Specification Requirements
3.2
Challenges in Design of Respiration Measurement Circuitry
3.3
Differential Balanced Design of Respiration Measurement Circuitry
4
References
Application Note
Challenges in Noise Suppression for Impedance-Based Respiration Measurement Circuitry in an Integrated AFE Architecture