High-level synthesis of ΔΣ modulator topologies optimized for complexity, sensitivity, and power consumption

Hua Tang, Alex Doboli

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

This paper proposes a novel topology-synthesis methodology for single-loop single-bit ΔΣ modulators. The goal is to explore all possible topologies and to obtain the optimal topology under various design considerations, such as hardware complexity, modulator sensitivity, and power consumption. A generic modulator architecture that incorporates all possible feedback and feedforward signal paths was defined and the symbolic noise transfer function (NTF) and signal transfer function (STF) for the generic topology were derived. The symbolic functions were then used to formulate the topology-exploration problem as a mixed-integer nonlinearly constrained programming (MINLP) problem that simultaneously generates and selects the optimal modulator topology with respect to the cost function. Experiments show the superiority of synthesized topologies as compared to traditional modulator topologies.

Original languageEnglish (US)
Pages (from-to)597-607
Number of pages11
JournalIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Volume25
Issue number3
DOIs
StatePublished - Mar 1 2006

Keywords

  • Delta-sigma modulator
  • Sensitivity
  • Synthesis
  • Topology

Fingerprint Dive into the research topics of 'High-level synthesis of ΔΣ modulator topologies optimized for complexity, sensitivity, and power consumption'. Together they form a unique fingerprint.

Cite this