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A survey on nonlinear analog-to-digital converters

Mauro, M. ; Horta, N. ; Guilherme, J.G.

Integration, The VLSI Journal Vol. 47, Nº 1, pp. 12 - 22, January, 2014.

ISSN (print): 0167-9260
ISSN (online): 0167-9260

Journal Impact Factor: 0,703 (in 2015)

Digital Object Identifier: 10.1016/j.vlsi.2013.06.001

Abstract
This paper presents a survey on Nonlinear Analog-to-Digital converters (ADC). This class of converters is extremely relevant in applications where there is a need for non-uniform quantization characteristic, for example, some specific applications in the areas of light detection, hearing aid, nuclear physics, image acquisition, communication systems, etc. This survey outlines the state-of-the-art Nonlinear ADC topologies, such as, floating point, logarithmic, piecewise linear and oversampled nonlinear converters, and discusses their performance and advantages in terms of their applications.