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Design of the CMOS inverter‐based amplifier: A quantitative approach
Author(s) -
Sharroush Sherif M.
Publication year - 2019
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.2628
Subject(s) - inverter , electronic engineering , amplifier , swing , slew rate , fully differential amplifier , linearity , instrumentation amplifier , cmos , voltage , current feedback operational amplifier , engineering , computer science , electrical engineering , operational amplifier , mechanical engineering
Summary The CMOS inverter can be used as an amplifier if properly biased in the transition region of its voltage‐transfer characteristics (VTC). In this paper, the design of this amplifier is investigated with its merits and demerits illustrated and with the various trade‐offs involved in its design discussed. Specifically, the following performance metrics are discussed quantitatively: gain, area, linearity, maximum allowable swing, bandwidth, stability, noise factor, impedance matching, and slew rate. Also, the effect of process, voltage, and temperature (PVT) variations are investigated. The optimum number of stages corresponding to the minimum area required for achieving a certain voltage gain is determined. The results obtained from the quantitative analysis and the simulation are discussed.