Parameter modeling and simulation of typical non-ideal analog to digital converter

Abstract

Analog-to-digital converters (ADC) are one the most fundamental and crucial parts of an electronic device. Consequently, simulating an ADC plays a challenging and fundamental role while aiming to simulate real-world instruments and designed systems. Despite the fundamental significance of this task, a general simulation model for typical non-ideal ADCs have not been presented yet. In this paper, we consider the most influential non-ideality parameters of a typical ADC and initiate simulation models in the Simulink environment of MATLAB. For this purpose, we first reconsider the non-ideality parameters of a typical ADC from general perspective. Afterwards, the potential models for the non-ideality parameters are initiated separately, and then, are combined together to make the whole model. By creating a MATLAB Block of the whole general-topology model at the end, and defining the non-ideality parameters as variable inputs, we simulate the behavior of a typical ADC using practical non-ideality parameters data. This additionally enables a user interface for quick input of non-ideality parameters of any practical ADC for future clients. Despite the pure generality of the model, simulation results demonstrate acceptable outcomes proving the applicability of this model in wide range of engineering simulation tasks, and an appreciable step towards higher precision general simulations of typical ADCs.