SigmaDelta A/D Conversion for Signal Conditioning addresses the
application of continuous-time SigmaDelta A/D converters in
receivers for a.o. wireless communication. In particular, it
focuses on their assets for digitizing such channels.
The book gives an overview of the state-of-the-art in SigmaDelta
design and of the challenges for future realizations. It provides
an understanding of the fundamental power efficiency of SigmaDelta
converters. In addition, it presents an analysis of the power
consumption in the decimation filter. Understanding these
power/performance trade-offs, it becomes clear that
straight-forward digitization of a conditioning channel, i.e.
exchanging analog for digital conditioning, comes at a major power
penalty.
This book proposes an alternative vision on digitization:
because of its inherent immunity to interferers, part of the signal
conditioning can be integrated into the continuous-time SigmaDelta
A/D converter. This approach results in a major improvement of the
power/performance balance of the entire channel. The various
aspects of the interferer immunity of the converter are analyzed in
much detail and improved SigmaDelta topologies with even higher
immunity are presented. Design examples for highly digitized AM/FM
and Bluetooth radios serve as an illustration. The examples include
detailed circuit diagrams, simulation and test results, as well as
an evaluation of the SigmaDelta-based conditioning channel as
compared to more conventional solutions.
The book is essential reading for mixed-signal and RF designers
who want to familiarize with the basics of SigmaDelta design. For
the experienced designer and for the system architect, the book
provides an in-depth understanding of the major assets of
SigmaDelta converters in digitized receivers.
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