Key result
Novel two-electrode ECG amplifier yields ~0.5% residual power vs standard three-electrode circuits.
Population
1 subject for ECG recording
Comparison
Two-electrode transimpedance biosignal amplifier… vs Three-electrode standard ECG circuit
Design
Other
Authors
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May enable ultra-low-power wearable ECGs; leaves open clinical validation before practice adoption.
A novel two-electrode biosignal amplifier achieves high signal quality comparable to standard three-electrode ECGs while consuming only 11 μW of power.
Inan et al. (2009) studied this question. Two-electrode transimpedance biosignal amplifier with active current feedback stabilization vs. Three-electrode standard ECG circuit was evaluated on Power of the residual of the normalized ensemble averages between the two measurements. A novel two-electrode biosignal amplifier circuit demonstrated a residual power of 0.54% compared to a standard three-electrode ECG circuit, with an overall power consumption of 11 μW.
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