By Hendrik van der Ploeg
In smooth platforms sign processing is played within the electronic area. opposite to analog circuits, electronic sign processing bargains extra robustness, programmability, errors correction and garage danger. the fad to shift the A/D converter in the direction of the enter of the process calls for A/D converters with extra dynamic diversity and better sampling speeds. This places severe calls for at the A/D converter and almost certainly raises the facility intake.
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Extra info for Calibration Techniques In Nyquist A/D Converters
This means that no speed improvement is achieved when the power of the circuit is increased, since gm and Cp increase equally. In general, this means that for a power-efﬁcient implementation the parasitic capacitance should be smaller than the applied load capacitance, otherwise more than half of the output power of the circuit is consumed to drive its own parasitic capacitance. The minimum time constant τmin which can be reached is independent of the applied load capacitance CLOAD and is determined by the ratio of gm and Cp of the actual circuit implementation.
4 Two-step By quantizing the analog signal in two steps, the number of comparators can be reduced signiﬁcantly [25, 26]. A rough estimation determines in which part of the range the input signal lies and a more accurate quantization determines the digital code inside this part of the range. This section discusses the two-step architecture. A more general name is the subranging architecture, since more than two steps can also be used for quantization . Architecture A two-step A/D converter divides the quantization into two steps .
This maximum capacitance needs to be charged with the respective signal with sufﬁcient accuracy within a certain time period, which is a measure for the power consumption. 6 Conclusions 19 dependent. This makes it possible to compare the power consumption of different A/D converter architectures, as discussed in chapter 3. This comparison can be made because the power consumption is proportional to the load capacitance and inversely proportional to the available settling time, if the parasitic capacitor is smaller than the load capacitance.