A comprehensive phase-spectrum approach to metrological characterization of hysteretic ADCs

A phase-spectrum-based approach to the dynamic characterization of hysteretic analog-to-digital converters is proposed. Analytical relations between hysteresis of the dynamic transfer characteristic and out-of-phase components of the output Fourier spectrum are given. On this basis, an error model, a figure of merit, and a procedure for dynamic hysteresis testing are presented. Results of numerical characterization and experimental validation tests highlight the practical effectiveness of the proposed approach and its suitability for standardization.