Key result
A high-precision sigma-delta modulator for ECG signal acquisition achieved signal-to-noise ratios of 105 and 81.2 dB with and without the SMIC-EE 0.18 μm model, respectively.
A novel high-precision sigma-delta modulator design demonstrates improved signal-to-noise ratio and effective number of bits, meeting requirements for remote ECG monitoring.
As a result of population aging, remote electrocardiograph (ECG) monitoring systems have increasingly gained attention. The traditional ECG signal acquisition system has many limitations. This paper presents a high-precision sigma-delta modulator for ECG signal acquisition. The circuit is implemented in a SMIC-EE 0.18 μm process. Simulation results indicate that the signal-to-noise ratios with and without the SMIC-EE 0.18 μm model are 105 and 81.2 dB, respectively, and the corresponding effect numbers of bits are 17.15 and 13.2 bits, respectively, which meet the requirements of a remote ECG monitoring system.
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Yang et al. (2016) studied ECG signal acquisition. High-precision sigma-delta modulator was evaluated on Signal-to-noise ratio and effect numbers of bits. A high-precision sigma-delta modulator for ECG signal acquisition achieved signal-to-noise ratios of 105 and 81.2 dB with and without the SMIC-EE 0.18 μm model, respectively.
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