Pipeline ADC Reference Range Control for Accurate LSB Conversion

The patent applies dynamics by making the conversion accuracy of the conversion unit variable rather than fixed. The control unit dynamically adjusts the conversion accuracy based on the conversion stage: using lower accuracy (fewer comparators) for MSB conversions and higher accuracy (more comparators) for LSB conversion. This resolves the contradiction by allowing a single conversion unit to adapt its precision level to match the requirements of each conversion stage.

The patent changes the parameter of conversion accuracy (number of comparators activated) based on the conversion stage. For MSB conversions, fewer comparators are used, while for LSB conversions, more comparators are activated to provide higher precision. This parameter adjustment allows the system to maintain low device complexity while achieving high measurement precision when needed.

The patent applies local quality by providing different conversion accuracy levels at different conversion stages rather than uniformly high accuracy throughout. High conversion accuracy (more comparators) is applied locally only to the LSB conversion stage where it is most needed, while MSB stages use lower accuracy. This resolves the contradiction by concentrating energy consumption only where high precision is critical.

The patent uses partial action by activating only the necessary number of comparators for each conversion stage. Instead of always using maximum accuracy, the system uses partial accuracy (fewer comparators) for MSB stages and excessive accuracy (more comparators) only for LSB stages. This optimizes energy usage by avoiding unnecessary high-precision operations in stages where they are not needed.