Multi-stage sigma-delta ADC with noise-coupling technology

IEICE Electronics Express

Jing Yu¹  Rongshan Wei¹ 

[1] College of Physics and Information Engineering, Fuzhou University

关键词: MASH;    sigma-delta modulator;    noise coupling;   

DOI  :  10.1587/elex.13.20160894

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper proposes new structures of multi-stage noise-shaping (MASH) sigma-delta ADC by applying second-order noise-coupling technology to conventional MASH modulators. The proposed architectures take advantage of the extra noise-coupled path to achieve a second-order noise-shaping increase as well as save the number of active devices. Theoretical analysis and system-level simulation are given, and the implementation of the modulators is also analyzed. The new structures are suitable for broadband applications.

【 授权许可】

CC BY