Key result
A novel single-supply ECG pre-amplifier using a bootstrapping technique achieved a balanced common-mode input impedance of 10 GΩ, CMRR >90dB, and power consumption <75µW.
Why the study?
Un-gelled and textile-based electrodes used in wearable ECG monitoring require amplifiers with high input impedance relative to source electrodes to optimize time and frequency responses and CMRR.
The proposed ECG pre-amplifier design achieves high input impedance and CMRR with low power consumption, making it suitable for use with un-gelled or textile-based electrodes in wearable technology.
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Enables dry-electrode wearables; leaves open clinical validation of signal fidelity in ambulatory use.
Maji et al. (2022) studied Ambulatory ECG recording. Single-supply ECG pre-amplifier with bootstrapping technique was evaluated on Amplifier performance (input impedance, capacitance, noise, CMRR, power consumption). A novel single-supply ECG pre-amplifier using a bootstrapping technique achieved a balanced common-mode input impedance of 10 GΩ, CMRR >90dB, and power consumption <75µW.
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