Fixed-step Simulation of Continuous-Time ΣΔ Modulators - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2008

Fixed-step Simulation of Continuous-Time ΣΔ Modulators

Philippe Benabes
Ali Beydoun
  • Fonction : Auteur

Résumé

A methodology for the simulation of continuous time sigma-delta (ΣΔ) converters is presented in this paper. This method permits the simulation of ΣΔ modulators employing continuous-time filters using a fixed-step algorithm. The analysis method is based on the discretization of a continuous-time model and using a discrete simulator, which is more efficient than an analog simulator. In our analysis approach, each samplingperiod is divided into a fixed number of steps. This transformation is exact in term of Noise Transfer Function and asymptotically exact in term of Signal Transfer Function (the Signal Transfer Function of the model rapidly tends to the continuous time model transfer function when the number of steps increases). Moreover, the ideal step-size can be estimated from the bandwidth of the input signal.
Fichier principal
Vignette du fichier
PID507518.pdf (222.68 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00216031 , version 1 (04-04-2008)
hal-00216031 , version 2 (17-04-2008)

Identifiants

  • HAL Id : hal-00216031 , version 1

Citer

Philippe Benabes, Ali Beydoun. Fixed-step Simulation of Continuous-Time ΣΔ Modulators. IEEE, ISCAS International Symposium on Circuits and Systems, May 2008, Seattle, United States. pp.NA. ⟨hal-00216031v1⟩
37 Consultations
78 Téléchargements

Partager

Gmail Facebook X LinkedIn More