تقویت کننده الکتروکاردیوگرام قابل تنظیم بسیار کم نویز و کم مصرف

SummaryThe objective of this research work is to propose an innovative low-power,low-noise, tunable three-stage capacitive instrumentation amplifier, capable ofreceiving and magnifying the electrocardiogram (ECG) signals. This is done byadding an extra stage to the second stage of the conventional capacitiveinstrumentation amplifier. The results show similar midband gain with lessercapacitor usage and smaller chip occupancy area with provision of concurrenttunable gain and bandwidth. The proposed amplifier is designed andimplemented using TSMC 0.18-μm CMOS technology scale under a 1-V supplyvoltage with the simulation process carried out using Cadence Virtuoso tool.Post-layout simulation results show that the amplifier has a tunable midbandgain of 55 to 65.6 dB, low-cutoff frequency tuned from 377 mHz to 4.5 Hz andhigh-cutoff frequency tuned from 86.8 to 263.6 Hz. The simulated value of theinput-referred noise and noise efficiency factor (NEF) of the amplifier are9.6 μVrms and 6 …