Title :
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
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;
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
DOI :
10.1109/ICASIC.2007.4415867
