Title :
Multi-bit oversampled ΣΔ A/D converters as front-end for CD-players
Author :
Naus, P.J.A. ; Dijkmans, E.C.
Author_Institution :
Philips Res. Labs., Eindhoven, Netherlands
Abstract :
A technique is presented to derive all the control signals needed for focusing and radial tracking in a digital servo system for CD-players, as well as the full-band data, with multi-bit ΣΔ A/D converters. The ΣΔ approach is of great interest because of its suitability to integrate in a VLSI process and no anti-aliasing filter is required due to the oversampling technique.
Keywords :
Hi-Fi equipment; sigma-delta modulation; CD players; VLSI process; anti-aliasing filter; control signals; digital servo system; front-end; multibit oversampled sigma-delta A/D converters; radial tracking; Bandwidth; Control systems; Frequency; Lenses; Optical filters; Photodiodes; Sampling methods; Servomechanisms; Signal resolution; Very large scale integration;
Conference_Titel :
Solid-State Circuits Conference, 1990. ESSCIRC '90. Sixteenth European
Conference_Location :
Grenoble
Print_ISBN :
2-86332-087-4
