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Propagation delay variation of the threshold detection comparator in current-day level-crossing ADCs is a fundamental impediment to their performance. This paper reviews why commonly used threshold detection comparators can be inappropriate to detect level crossing times of high-frequency signals. The analysis presented in this paper helps establish a new common ground for developing a high-performance...
This paper presents an improved design for a Level-Crossing ADC (LCADC) that incorporates both an equivalent-time method and a clocked comparator. The LCADC is experimentally validated using a 65 nm clocked comparator.
This paper describes an algorithm for generating test signals to efficiently test the linearity of ADCs. Linearity is an important testing item for ADCs, and it takes a long time (hence is costly) to test low-sampling-rate, high-resolution ADCs. We here propose to generate a test signal consisting of multiple sine waves, to precisely test the linearity for specific important codes (such as around...
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