A Short Review of Some Analog-to-Digital Converters Resolution Enhancement Methods

Abstract The resolution of the analog-to-digital converter (ADC), i.e. the minimum voltage that ADC can recognize, is an important indicator of ADC performance. In order to improve the accuracy of ADCs, some approaches are proposed to enhance the resolution of ADC. This paper presents a review of ADC resolution enhancement schemes, which includes the introduction of primary features, the explanation of basic principles, as well as their merits, demerits, and trade-offs. It describes a variety of resolution enhancement schemes from different aspects such as signal processing, ADC calibration, and novel acquisition architectures, and analyzes their applicable scenes. Finally, some challenges and issues are briefly summarized, as well as some comments on future work in this field. By reviewing the current literature, we can make recommendations on the design of acquisition system resolution according to the actual requirements.