文献类型：期刊文献

英文题名：Analysis and design of a multi-bit sigma-delta modulator for chromatography application

作者：Li, Yu[1]; Wang, Sengwei[1]; Wu, Huiwen[1]; Luo, Jianping[2]

机构：[1] Department of Electronic and Communication, East China University of Science and Technology, Shanghai, China; [2] Center of Technology, Leadcore Technology Co., Ltd, Shanghai, China

年份：2014

起止页码：290

外文期刊名：PIC 2014 - Proceedings of 2014 IEEE International Conference on Progress in Informatics and Computing

收录：EI(收录号：20145200358169)

语种：英文

外文关键词：Modulators - Delta sigma modulation - Signal to noise ratio - Chromatography

摘要：This paper presents the parameters design, modeling and performance analysis of the Sigma-Delta Modulator (SDM) for chromatography application. Chromatograph instruments often have rigid requirements to the output analog signal in signal processing. In order to ensure the high resolution, it requires not only the noise is very small and the signal distortion is not existence. The rate of signal to noise of SDM usually should be higher than 106dB. Specially, the frequency of chromatography signal is very low, often lower than 2Hz. It is different from other applications. In this paper, the main parameters of SDM for chromatography are designed and the topology of modulator is optimized. Finally, simulations are conducted by simulink modeling. Results show that the proposed SDM is stable and suitable for chromatography application. ? 2014 IEEE.