A high-swing MOS cascode bias circuit for operation

linwu1999

A high-swing MOS cascode bias circuit for operation at any current level 工作在饱和区的边缘

carrotcarrot

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cheny1982

cheny1982

blackbird

hao..

henry_su

下了就顶.个人原则

cheny1982

ahhuh

wan to learn how to calculate the small signal

semico_ljj

ABSTRACT

In this paper, we propose a very simple bias circuit that allows for
maximum output voltage swing of MOSFET cascode stages. The
proposal is valid for any current density and is technology-
independent. Starting from the saturation voltage and from the
current density of the cascode stage we determine the aspect ratio
of the transistors in the bias circuit in order to maximize the output
voltage ~ swing. Experimental results validate the strategy for
designing the bias network.

semico_ljj

6. CONCLUSIONS
A very simple bias circuit, valid for any current density, which
allows for maximum output voltage swing of cascode stages has
been presented and analyzed. Starting from the multiplication
factor of the output impedance required for the cascode stage
relative to the single stage and from the output swing it is possible
to determine the “optimally” biased network. Experimental results
corroborated the design methodology .of the bias network. The
biasing circuit is very useful for low-voltage design