Key result
Novel instrumentation amplifier successfully removes ECG noise while consuming ~0.9 mW of power.
A novel instrumentation amplifier design demonstrates low power consumption and effective noise removal for biomedical applications such as ECG signal processing.
Supports low-power bio-signal acquisition in wearables; extends single-CCTA designs for tunable current-mode operation.
This paper presents a new instrumentation amplifier employing a single current conveyor transconductance amplifier (CCTA) and two PMOS transistors. The proposed circuit operates in both current‐mode and transimpedance‐mode. Electronic adjustment feature is provided by using an electronic resistor realized with two transistors. The SPICE simulation results based on 0.13‐μm IBM CMOS parameters are carried out to confirm the theoretical analysis. The proposed IA operates at ±0.9 V supply voltage and the total power consumption is found to be 0.9 mW. The functionality and robustness of the proposed circuit has been verified by frequency and time‐domain simulations. As an application example, the proposed current‐mode instrumentation amplifier has been employed for removing the noise component in electrocardiogram (ECG) signals. Moreover, the proposed circuit underwent experimental testing utilizing commercially accessible integrated circuits (ICs), namely the AD844 and LM13700.
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Özer et al. (2026) studied Electrocardiogram (ECG) signal noise. Current and Transimpedance-Mode Instrumentation Amplifier using CCTA was evaluated. A new instrumentation amplifier employing a single CCTA operating at ±0.9 V with 0.9 mW power consumption was successfully designed and experimentally verified for removing noise in ECG signals.
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