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- W2545231127 abstract "This paper demonstrates the design of analog amplifiers using alpha-power MOS model. Any MOS amplifier design begins with estimation of device parameters (NMOS/PMOS) like alpha($alpha), V_T$ and device transconductance ($k^prime$) and they are typically estimated from simple device plots using simulator. The approach proposed here assumes $V_T=V_{GS}$ measured at $I_D$ of SI{1}{microampere} from the $I/V$ plot. Once approximate $V_T$ is known, device transconductance ($k^prime$) is simply the drain current at $V_{OV} of 1$~V. For hand calculations, employing sub-micron devices, value of $alpha$ is taken as 1.3 but it can be calculated from the $g_m$ measurement again at overdrive ($V_{OV}$) of SI{1}{volt}, to reduce error due to $alpha$. This simple approach could be used to design the amplifier using pen and paper, and found to be much better than methods explained in text books using square-law model. It is also found that any error in $V_T$ will be greatly reduced by $k^prime$ and $alpha$, and parameters can predict the device performance quite closely at lesser complexity. Proposed method is not only technology independent, it is simple to adapt for modern CMOS devices. Any basic SPICE like simulator may be used for extraction of parameters for typical device lengths used in analog design. Using proposed approach, an workable design can be made very quickly which can be optimized further using known procedures. Two basic amplifiers are designed using the proposed method and simulation results show the merit of the work." @default.
- W2545231127 created "2016-11-04" @default.
- W2545231127 creator A5058915758 @default.
- W2545231127 date "2014-09-01" @default.
- W2545231127 modified "2023-09-25" @default.
- W2545231127 title "Simulator Assisted CMOS Amplifier Design Using $Alpha$-Power Model" @default.
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- W2545231127 doi "https://doi.org/10.1109/icdccom.2014.7024744" @default.
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