The search functionality is under construction.
The search functionality is under construction.

Subtraction Inversion for Delta Path's Hardware Simplification in MASH Delta-Sigma Modulator

Pao-Lung CHEN

  • Full Text Views

    0

  • Cite this

Summary :

The multistage noise-shaping (MASH) delta-sigma modulator (DSM) is the key element in a fractional-N frequency synthesizer. A hardware simplification method with subtraction inversion is proposed for delta-path's design in a MASH delta-sigma modulator. The subtraction inversion method focuses on simplification of adder-subtractor unit in the delta path with inversion of subtraction signal. It achieves with less hardware cost as compared with the conventional approaches. As a result, the hardware organization is regular and easy for expanding into higher order MASH DSM design. Analytical details of the implementation way and hardware cost function with N-th order configuration are presented. Finally, simulations with hardware description language as well as synthesis data verified the proposed design method.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E93-A No.12 pp.2616-2620
Publication Date
2010/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E93.A.2616
Type of Manuscript
Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category
Circuit Design

Authors

Keyword