Optimization of Power and Area in Low-Noise CMOS Bio-Signal Amplifiers

Journal Of Electrical Systems And Signals

مقاله 3، دوره 1، شماره 1، خرداد 2013   

نوع مقاله: Researsh Articles

شناسه دیجیتال (DOI): 10.22067/ess.v1i1.17115

نویسندگان

Iman Madadi؛ Shahin Jafarabadi Ashtiani^* ؛ Nasser Masoumi

School of electrical and computer engineering, College of Engineering, University of Tehran

چکیده

Area and power consumption are the most important parameters in integrated bio-potential signal amplifier with low noise and low bandwidth requirements. In this paper we present an analytical method for optimizing differential amplifiers for a constant input-referred noise level. Power- area optimization is performed over 1mHz to 10kHz in a 0.18μm CMOS technology. The amplifier consumes 22μA from a 1.8V power supply and the total equivalent input-referred noise over that bandwidth is equal to 2.4μVrms. The results, validated by SPICE circuit simulations, indicate that the amplifier can be optimized for specific input-referred RMS noise level.

کلیدواژه‌ها

Bio-signal Amplifiers؛ MOSFET؛ Flicker Noise؛ Thermal Noise؛ Optimization