Designing of Digital Front-End Structure for ECG Acquisition System

Abstract

This article grants a design of digital front end structure for electrocardiogram (ECG) acquisition system utilized to diminish the energy dissipation. ECG utilizes to know the heart disorder of patient in medical field and the electrical actions generated by the heart muscles is demonstrated on ECG, then it transmits the pulsating electrical wave towards the skin. ECGs are utilized to estimate the heart speed and to check the rhythm for the heart diseases. The proposed structure of ECG is companionable with digital complementary metal oxide semiconductor (CMOS) and that can be performed with the supply voltage of 0.4V. To cancel the direct current (DC) offset on the circuit, a digital feedback loop engaged. In this design, the voltage to time converter (VTC), time mode processing and time to digital converter (TDC) are considered to convert the analog portion to digital portion. The design is implemented in 0.18µm CMOS process in cadence tool.