基于模拟余量A2理论的2位40 MSPS ADC＋和2＋4位40 MSPS ADC  

Design of 2+4-Bit 40 MSPS ADC Using 2-Bit 40 MSPS ADC+ Based on A2 Theory of Remainder of Analogue Quantity

作　　者：王百鸣[1] 孟晓胜[2] 闫杰[2] 潘志铭[1] 

机构地区：[1]深圳大学信息工程学院EDA技术中心 [2]深圳大学光电子学研究所,广东深圳518060

出　　处：《微电子学》2008年第1期129-132,140,共5页Microelectronics

基　　金：国家自然科学基金重大研究计划资助项目(90407001);深圳市科技计划资助项目(200512)

摘　　要：实施一种新的解决方案,将能输出模拟余量A2的独特ADC+应用于各类A/D转换器芯片,以构成性能扩展的复合A/D转换器。该ADC+是折叠式2位40 MSPS A/D转换器,应用于分级流水结构的4位40 MSPS A/D转换器,构成了复合2+4位40 MSPS A/D转换器。给出了实际电路的理论分析和实验测试结果,表明了此种解决方案的可行性及优点。A new implementation scheme is presented, in which a special ADC＋ of A2 analogue remainder quantity can be applied to various A/D converters （ADC） to construct performance-extensible composite ADCs. This kind of ADC＋ is folding 2-bit 40 MSPS ADC, which, when applied to pipelining and subranging 4-bit 40 MSPS A/ D converter, can form a composite 2＋4-bit 40 MSPS ADC. Theoretic analysis and experiment were made on the circuit structure, and an actual circuit was given to demonstrate its characteristics. Test results show that the pro- posed implementation scheme is feasible.

关 键 词：模/数转换器 模拟余量 折叠 分级 

分 类 号：TN792[电子电信—电路与系统]