Asynchronous ADCs: Design Methodology and Case study

G. Sicard (1) , M. Renaudin (1) , E. Allier (1) , Laurent Fesquet (1)

1 TIMA - Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés

We present a new class of Analog-to-Digital Converters (ADCs), based on an irregular sampling of the analog signal, and an asynchronous design. Because these ADCs are not conventional, a design methodology is also presented. It determines their characteristics given the required Effective Number of Bits and the properties of the analog signal to convert. A prototype has been designed for speech applications, using the 0.18-µm CMOS technology from STMicroelectronics. Electrical simulations prove that the Figure of Merit (FoM) is increased by more than one order of magnitude compared to synchronous Nyquist ADCs.

Mots clés: asynchronous circuits and systems

Domaines: Micro et nanotechnologies/Microélectronique

G. Sicard, M. Renaudin, E. Allier, Laurent Fesquet. Asynchronous ADCs: Design Methodology and Case study. 8th International Workshop on ADC modelling and testing (IWADC'03), Sep 2003, Perugia, Italie. pp.29-32. ⟨hal-01391655⟩