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Noise optimization of switched capacitor integrator
Wang X(王霄); Shi ZL(史泽林); Xu BS(徐保树)
作者部门光电信息技术研究室
会议名称2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
会议日期June 1-4, 2015
会议地点Singapore
会议录名称2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
出版者IEEE
出版地Piscataway, NJ, USA
2015
页码519-522
收录类别EI ; CPCI(ISTP)
EI收录号20161502208310
WOS记录号WOS:000380458700131
产权排序1
ISBN号978-1-4799-8362-9
关键词Switched-capacitor(Sc) Circuit Noise Model Capacitor Time-domain Simulation
摘要The paper presents a method of noise optimization for a type of classical switched-capacitor(SC) integrators to design the distribution plan of capacitors in a specific layout area. The OP utilized in the SC integrator is a two-stage OP. Thus there are three significant capacitors, two of which are sampling capacitors and one of which is the compensation capacitor in the OP. Using small signal model, noise model of positive integrator and negative integrator are established, respectively, which are expressed in transfer functions to find the optimal distribution of capacitors. The noise analysis is validated by a time-domain simulation, corresponding well with each other. The result shows that the positive integrator has same noise performance as the negative integrator and under the limit of 30um × 30um layout area with TSMC 0.18um mixed-signal process and under the 10 AR and 0.1% DE demand the two sampling capacitors and the compensation capacitor should be 1pF, 0.lpF and 0.7pF, respectively to achieve an optimal noise performance with satisfying the speed demand simultaneously with 10 stages of integration and sampling capacitor ratio.
语种英语
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文献类型会议论文
条目标识符http://ir.sia.cn/handle/173321/17344
专题光电信息技术研究室
通讯作者Wang X(王霄)
作者单位Shenyang Institute of Automation, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang, China
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GB/T 7714
Wang X,Shi ZL,Xu BS. Noise optimization of switched capacitor integrator[C]. Piscataway, NJ, USA:IEEE,2015:519-522.
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