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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Circuits & components
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High Frequency Continuous Time Filters in Digital CMOS Processes (Hardcover, 2000 ed.)
Loot Price: R3,067
Discovery Miles 30 670
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High Frequency Continuous Time Filters in Digital CMOS Processes (Hardcover, 2000 ed.)
Expected to ship within 10 - 15 working days
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There is an ever increasing trend towards putting entire systems on
a single chip. This means that analog circuits will have to coexist
on the same substrate along with massive digital systems. Since
technologies are optimized with these digital systems in mind,
designers will have to make do with standard CMOS processes in the
years to come. We address analog filter design from this
perspective. Filters form important blocks in applications ranging
from computer disc-drive chips to radio transceivers. In this book,
we develop the theory and techniques necessary for the
implementation of high frequency (hundreds of megahertz)
programmable continuous time filters in standard CMOS processes.
Since high density poly-poly capacitors are not available in these
technologies, alternative capacitor structures have to be found.
Met- metal capacitors have low specific capacitance. An alternative
is to use the (inherently nonlinear) capacitance formed by MOSFET
gates. In Chapter 2, we focus on the use of MOS capacitors as
integrating elements. A physics-based model which predicts
distortion accurately is presented for a two-terminal MOS structure
in accumulation. Distortion in these capacitors as a function of
signal swing and bias voltage is computed. Chapter 3 reviews
continuous-time filter architectures in the light of bias-dependent
integrating capacitors. We also discuss the merits and demerits of
various CMOS transconductance elements. The problems encountered in
designing high frequency programmable filters are discussed in
detail.
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