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Noise optimization of switched capacitor integrator
Wang X(王霄); Shi ZL(史泽林); Xu BS(徐保树)
Department光电信息技术研究室
Conference Name2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
Conference DateJune 1-4, 2015
Conference PlaceSingapore
Source Publication2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
PublisherIEEE
Publication PlacePiscataway, NJ, USA
2015
Pages519-522
Indexed ByEI ; CPCI(ISTP)
EI Accession number20161502208310
WOS IDWOS:000380458700131
Contribution Rank1
ISBN978-1-4799-8362-9
KeywordSwitched-capacitor(Sc) Circuit Noise Model Capacitor Time-domain Simulation
AbstractThe 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.
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://ir.sia.cn/handle/173321/17344
Collection光电信息技术研究室
Corresponding AuthorWang X(王霄)
AffiliationShenyang 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
Recommended Citation
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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