Multiplexer Design Applied to High-Speed Signal Transmission

作     者：曹寒梅 杨银堂 蔡伟 陆铁军 王宗民 

作者机构：西安电子科技大学微电子学院宽禁带半导体材料与器件教育部重点实验室西安710071 北京微电子技术研究所北京100076 

基　　金：国家自然科学基金资助项目(批准号:60476046 60676009)~~ 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2008年第29卷第6期

页      码：1040-1043页

摘      要：A multiplexer with a low-distortion high-bandwidth analog switch is presented. The gate-to-source voltage of the switch is set by the combined on-voltage of a pMOS and an nMOS,and the difference between its gate-source voltage and the threshold voltage （VGST） is guaranteed to be constant with input variation. Thus, the body effect is nearly canceled. Implemented in a TSMC 0.18μm CMOS process, results from HSPICE simulation show that the VGST is nearly constant with an input range from 0.3 to 1.7V,and the - 3dB bandwidth is larger than 10GHz;the SFDR （spurious free dynamic range） of the output is 67. lldB with 1GHz input frequency; the turn-on time is 2.98ns,and the turn-off time is 1.35ns, which indicates a break-before-make action of the multiplexer. The proposed structure can be applied to high speed signal transmission.

主 题 词：low-distortion high speed multiplexer analog switch 

学科分类：080903[080903] 0809[工学-计算机类] 08[工学] 

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