CMOS Bio-medical Amplifier based on Tera-Ohm Pseudo-resistor for Bio-detection System

This work presents the design of a CMOS bio-medical amplifier using \mathrm{T}\ \Omega pseudo-resistor based on MOS transistors operating in the weak inversion region. The pseudo-resistor is utilized as a feedback element in the first and second stage of the two-stages bio-medical amplifiers in the...

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Bibliographic Details
Main Authors: AbuShawish, Israa Y., Mahmoud, Soliman A.
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
bio-detection system
bio-medical amplifier
Biological system modeling
BMI
Operational amplifiers
Power demand
pseudo-resistor
Resistors
Semiconductor device modeling
Simulation
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Summary:This work presents the design of a CMOS bio-medical amplifier using \mathrm{T}\ \Omega pseudo-resistor based on MOS transistors operating in the weak inversion region. The pseudo-resistor is utilized as a feedback element in the first and second stage of the two-stages bio-medical amplifiers in the portable bio-detection system. Analytical analysis and simulations in LT-spice using 130 nm CMOS technology are performed to validate the realization of the extremely high resistance which can be reached to over tens of \mathrm{T}\ \Omega . The simulation of the two-stages bio-medical amplifier based pseudo-resistor are carried out in LT-spice using ± 0.6 V supply. The LT-spice simulation results are confirming with both the results obtained by the MATLAB and the analytical analysis of the pseudo-resistor.
ISSN:2474-0446
DOI:10.1109/SSD52085.2021.9429430