An 1.2GHz High-performance MUX-DDFS Using Quartet ROMs

摘要：

　　This paper presents a detailed description of a direct digital frequency synthesizer(DDFS) using optimized quartet ROMs.The quartet ROMs technology allows improving the systems winking frequency with respect to controllable chip size and beneficial effects on system performances.Such a high-speed DDFS has been fabricated and characterized in 0.13 μm CMOS technology and it produces a 12-bit outputs with a spectral purity of 53 dBc.Its maximum operating frequency is 1.2GHz by using six pipelining stages.Analytical investigation of sprctral performances achievable by using dual-slope approximation and detailed description of high-speed flip-flops employed in 1.2GHz DDFS are also presented in this paper.

关键词： Index Terms-DDFS current steering D/A converter MUX-DDFS mixed signals integrated circuits

作者: Zhikun Hao Zhi Fang Ling Yuan

作者单位: Institute of Semiconductors, Chinese Academy of Science, Beijing 100083, China;Department of Electro Institute of Semiconductors, Chinese Academy of Science, Beijing 100083, China

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Computer Application and System Modeling(2012第二届计算机应用与系统建模国际会议)(ICCASM-2012)

会议地点: 沈阳

会议语种:英文

页码: 853-855

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）