Continuous-time digital filtering analogue-to-digital converter

Alin Ratiu (1) , Dominique Morche (1) , Bruno Allard (2) , Xuefang Lin-Shi (3) , Jacques Verdier (4)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 EE - Ampère, Département Energie Electrique
3 MIS - Ampère, Département Méthodes pour l'Ingénierie des Systèmes
4 INL - CSH - INL - Conception de Systèmes Hétérogènes

Despite their alias-free operation, continuous time ADCs can have their power consumption overwhelmed when presented out-of-band, high frequency, high amplitude signals. A new continuous time ADC architecture which, thanks to its embedded low-pass filter transfer function is proposed, enables a power efficient quantisation in the presence of such signals. Moreover, the half-digital nature of this approach simplifies the implementation of the proposed system compared to a standard filter-first solution.

Mots clés: power-efficient quantisation; embedded low-pass filter transfer function; continuous time ADC architecture; standard filter-first solution; high-frequency high-amplitude signal; continuous-time digital filtering analogue-to-digital converter; power consumption

Domaines: Energie électrique

Alin Ratiu, Dominique Morche, Bruno Allard, Xuefang Lin-Shi, Jacques Verdier. Continuous-time digital filtering analogue-to-digital converter. Electronics Letters, 2016, 52 (6), pp.432 - 433. ⟨10.1049/el.2015.3204⟩. ⟨hal-01646301⟩