Title :
A 6.7µW CMOS bioamplifier for active electrode with DC rejection
Author :
Shi Huang ; Jinyong Zhang ; Lei Wang
Author_Institution :
Inst. of Biomed. & Health Eng. (IBHE), Shenzhen Inst. of Adv. Technol. (SIAT), Shenzhen, China
fDate :
Oct. 31 2013-Nov. 2 2013
Abstract :
Since the fabrication of active electrodes has been reported and their beneficial effects scientifically confirmed, we present a CMOS bioelectric amplifier with DC rejection designed for active electrode in this paper. Analysis, design and post simulation results will be described in detail. The amplifier operating at ±0.9V supply voltage has a mid-band gain of 40dB with ±300mV dc offset rejection and has a power consumption of 6.7μW. The bandwidth extends from a low-frequency cutoff of 7.9mHz to a high-frequency cutoff of 2.1kHz which is suitable for ECG signals. This proposed amplifier has an input-referred noise of 5.9μVrms. This amplifier is under fabrication in 0.18μm 1P6M CMOS Process.
Keywords :
CMOS integrated circuits; bioelectric phenomena; biomedical electrodes; biomedical electronics; power consumption; CMOS bioelectric amplifier; DC rejection; ECG signals; amplifier operating; dc offset rejection; electrode fabrication; frequency 2.1 kHz; frequency 7.9 mHz; gain 40 dB; input-referred noise; low-frequency cutoff; midband gain; power 6.7 muW; power consumption; voltage 0.9 V; CMOS integrated circuits; Capacitance; Cutoff frequency; Electrodes; Impedance; Noise; Resistors; CMOS; DC rejection; active electrode; bioelectric amplifier;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2013 IEEE
Conference_Location :
Rotterdam
DOI :
10.1109/BioCAS.2013.6679625
