Design of Multi-Bit Delta-Sigma A/D Converters discusses both
architecture and circuit design aspects of Delta-Sigma A/D converters,
with a special focus on multi-bit implementations. The emphasis is on
high-speed high-resolution converters in CMOS for ADSL applications,
although the material can also be applied for other specification goals
and technologies.
Design of Multi-Bit Delta-Sigma A/D Converters starts with a general
introduction of the concepts of Delta-Sigma converters. A wide variety
of architectures are discussed, ranging from single-loop to cascaded and
various multi-bit topologies. These topologies are optimized to obtain
stable converters with a high accuracy. A clear overview is provided of
the maximum achievable performance of each topology, which allows a
designer to select the optimal architecture for a certain specification.
Special attention is paid to multi-bit architectures and possible
solutions for the linearity problem of the DA converter in the feedback
loop of converters.
Several circuit design aspects of multi-bit Delta-Sigma converters are
discussed. Various models are provided for a wide range of linear and
non-linear circuit imperfections, which can degrade the performance of
the converter. These models allow the designer to determine the required
specifications for the different building blocks and form the basis of a
systematic design procedure. The presented material is combined in a
concluding chapter, which illustrates the systematic design procedure
for two high-performance converters.
Design of Multi-Bit Delta-Sigma A/D Converters provides a clear
comparison of architectures and yields insight into the influence of the
most important circuit non-idealities. It will allow you to design
robust and high-performance Delta-Sigma AD converters in a shorter time.
It is essential reading for analog design engineers and researchers in
the field of AD converters and it is also suitable as a text for an
advanced course on the subject.
