Key result
Proposed two-electrode ECG front end cuts power consumption 3-fold while maintaining comparable noise suppression.
A novel low-power ground-free analog front end for ECG acquisition significantly reduces power consumption while maintaining robust interference suppression.
May enable extended wearable ECG monitoring; leaves open prospective clinical validation of real-world performance.
This article presents the design of a low-power ground-free (two-electrode) analog front end (AFE) for ECG acquisition. At the heart of the design is the low-power common-mode interference (CMI) suppression circuit (CMI-SC) to help minimize the common-mode input swing and prevent turning on the ESD diodes at the input of the AFE. Fabricated in a 0.18- <tex-math notation="LaTeX">μ</tex-math> m CMOS process with an active area of 0.8 <tex-math notation="LaTeX">mm²</tex-math> , the two-electrode AFE can tolerate CMI of up to 12 <tex-math notation="LaTeX">Vₚp</tex-math> , while consuming only 6.55 <tex-math notation="LaTeX">μ</tex-math> W of power from a 1.2-V supply and exhibiting 1.67 <tex-math notation="LaTeX">μ Vᵣₘₛ</tex-math> of input-referred noise in a 1–100 Hz bandwidth. Compared to existing works, the proposed two-electrode AFE thus provides a <tex-math notation="LaTeX">3×</tex-math> reduction in power for comparable noise and CMI suppression performances.
No takes yet. Share an insight, caveat, or question.
Watcharapongvinit et al. (2023) studied ECG acquisition. Low-power ground-free (two-electrode) analog front end (AFE) vs. Existing works was evaluated on Power consumption, noise, and common-mode interference suppression. A proposed two-electrode analog front end for ECG acquisition provided a 3-fold reduction in power consumption for comparable noise and common-mode interference suppression compared to existing works.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: