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一种5阶1位∑-△调制器的设计

The Design of a 5^th-Order 1-Bit Sigma-Delta Modulator

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【Author】 LI Sheng ping 1, MING You zhu 1, HUANG feng 1, ZOU Xue cheng 2 (1 State Education Ministry Laboratory of Image Information and Intelligence Control; 2 Dept Elec Sci and Technol , Huazhong Sci and Technol Univ , Wuhan, Hubei 430074, P R China)

【机构】华中科技大学图像信息处理与智能控制教育部重点实验室；华中科技大学电子科学与技术系湖北武汉430074；湖北武汉430074；湖北武汉430074；

【摘要】提出了一种稳定的 5阶 Σ- Δ调制器的设计与调试方法。电路采用 5阶级联结构 ,主要用CMOS开关电容技术实现 ,文章重点放在调制器结构的设计及几种防止系统发散和改进性能的途径上。模拟实验表明 ,经过改进的系统有较好的性能。更多还原

【Abstract】 Method for designing a stable 5th order sigma delta modulator is presented in the paper A 5th order cascaded structure has been adopted, and switched capacitor technique is used to realize the function Emphases are placed on the design of modulator’s structure, and approaches to preventing the dispersal of the system and improving the performance are discussed in particular Simulation shows that the improved system has better performance更多还原