A behavior-oriented simulation tool for design and optimization of sigma-delta ADCs

Author

Zhang, Xin ; Yu, Dunshan ; Sheng, Shimin

Author_Institution

Peking Univ., Beijing

fYear

2007

fDate

22-25 Oct. 2007

Firstpage

1269

Lastpage

1272

Abstract

In this paper, a behavior-oriented simulation tool is proposed for the designing and optimizing of sigma-delta ADCs. We show how this kind of simulation tool can be used in a top-down design flow in the mixed-signal system design. The imperfections of the analog cells as integrators, comparator, and the CpAMPs are analyzed in detail, which guides the design towards high performance. Besides, the modeling, simulation, and design of a second-order sigma-delta modulator are presented as a proof for the effectiveness of the simulation tool. A peak SNR of 91.5 dB, a 15 bit resolution, and a 57 m W power dissipation are obtained through HSPICE simulation. Currently chip is in the fabrication phase.

Keywords

logic design; sigma-delta modulation; analog cel; behavior-oriented simulation tool; mixed-signal system design; power 57 mW; second-order sigma-delta modulator; sigma-delta ADC; Analytical models; Circuits; Delta-sigma modulation; Design optimization; Digital modulation; Fabrication; Performance analysis; Phase modulation; Power dissipation; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2007. ASICON '07. 7th International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4244-1132-0

Electronic_ISBN

978-1-4244-1132-0

Type

conf

DOI

10.1109/ICASIC.2007.4415867

Filename

4415867