Abstract
The concept of adaptation is a broad concept that can be applied to many fields in the area of analog and mixed signal system and circuit design. As discussed in chapter 1, absolute values of on-chip elements characteristics are highly inaccurate, leading any performance parameter that depends on those characteristics to be highly inaccurate as well. One way to solve this problem is based on developing circuit techniques for implementing the required system (oscillator, filter ...etc.) such that targeted performance parameters (oscillation frequency, bandwidth ...etc.) of the system would depend on a ratio between similar on-chip elements rather than their individual absolute values. As will be discussed later in details, ratios between similar on-chip elements are much more accurate than their individual absolute values. Example of circuits that employ this strategy is switched-capacitor circuits1. Unfortunately though, it is not always possible to implement the required system such that the parameter of interest is only a function of ratios between similar elements. In these cases, depending on the absolute values of those elements becomes inevitable, and an adaptive architecture has to be employed to tune out performance degradation resulting from this dependency.
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(2006). Adaptive Architectures. In: Adaptive Techniques for Mixed Signal System on Chip. The International Series in Engineering and Computer Science, vol 872. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-32155-4_2
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DOI: https://doi.org/10.1007/978-0-387-32155-4_2
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