Title :
Optimal filtering of incremental first-order sigma-delta modulators with sweep input
Author :
Maréchal, Sylvain ; Krummenacher, François ; Kayal, Maher
Author_Institution :
Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
In this paper, an optimal filter design procedure is described, from the equation representing the behaviour of a ΣΔ modulator to a functional algorithm. The first section shows the design of an optimal filter for a first-order ΣΔ ADC with a constant input. Next, an algorithm for a time-varying input is detailed. The last algorithm allows an optimal decoding of high-resolution ADCs without an SH circuit.
Keywords :
circuit optimisation; decoding; filtering theory; sigma-delta modulation; first-order Σ-Δ ADC; high-resolution ADC; incremental first-order sigma-delta modulator; optimal decoding; optimal filter design; sweep input; Magneto electrical resistivity imaging technique;
Conference_Titel :
Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-8155-2
DOI :
10.1109/ICECS.2010.5724568
