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High-Accuracy CMOS Smart Temperature Sensors (Hardcover, 2001 ed.)
Loot Price: R4,635
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High-Accuracy CMOS Smart Temperature Sensors (Hardcover, 2001 ed.)
Series: The Springer International Series in Engineering and Computer Science, 595
Expected to ship within 10 - 15 working days
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This book describes the theory and design of high-accuracy CMOS
smart temperature sensors. The major topic of the work is the
realization of a smart temperature sensor that has an accuracy that
is so high that it can be applied without any form of calibration.
Integrated in a low-cost CMOS technology, this yields at the
publication date of this book one of the most inexpensive
intelligent general purpose temperature sensors in the world. The
first thermometers could only be read by the human eye. The
industrial revolution and the following computerization asked for
more intelligent sensors, which could easily communicate to digital
computers. This led to. the development of integrated temperature
sensors that combine a bipolar temperature sensor and an A-to-D
converter on the same chip. The implementation in CMOS technology
reduces the processing costs to a minimum while having the
best-suited technology to increase the (digital) intelligence. The
accuracy of conventional CMOS smart temperature sensors is degraded
by the offset of the read-out electronics. Calibration of these
errors is quite expensive, however, dynamic offset-cancellation
techniques can reduce the offset of amplifiers by a factor 100 to
1000 and do not need trimming. Chapter two gives an elaborate
description of the different kinds of dynamic offset-cancellation
techniques. Also a new technique is introduced called the nested
chopper technique. An implementation of a CMOS nested-chopper
instrumentation amplifier shows a residual offset of less than lOOn
V, which is the best result reported to date."
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