Books > Computing & IT > Applications of computing > Signal processing
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Time-to-Digital Converters (Hardcover, 2010 ed.)
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Time-to-Digital Converters (Hardcover, 2010 ed.)
Series: Springer Series in Advanced Microelectronics, 29
Expected to ship within 12 - 17 working days
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Micro-electronics and so integrated circuit design are heavily
driven by technology scaling. The main engine of scaling is an
increased system performance at reduced manufacturing cost (per
system). In most systems digital circuits dominate with respect to
die area and functional complexity. Digital building blocks take
full - vantage of reduced device geometries in terms of area, power
per functionality, and switching speed. On the other hand, analog
circuits rely not on the fast transition speed between a few
discrete states but fairly on the actual shape of the trans- tor
characteristic. Technology scaling continuously degrades these
characteristics with respect to analog performance parameters like
output resistance or intrinsic gain. Below the 100 nm technology
node the design of analog and mixed-signal circuits becomes
perceptibly more dif cult. This is particularly true for low supply
voltages near to 1V or below. The result is not only an increased
design effort but also a growing power consumption. The area
shrinks considerably less than p- dicted by the digital scaling
factor. Obviously, both effects are contradictory to the original
goal of scaling. However, digital circuits become faster, smaller,
and less power hungry. The fast switching transitions reduce the
susceptibility to noise, e. g. icker noise in the transistors.
There are also a few drawbacks like the generation of power supply
noise or the lack of power supply rejection.
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