【摘要】 基于扩展的真单相时钟(E-TSPC)技术,设计了一款用于10 GHz扩频时钟发生器(SSCG)的分频比范围为32~63的多模分频器(MMD)。在设计中,基于D触发器的2/3分频器采用了动态E-TSPC技术,这不仅降低了功耗和芯片面积,而且改善了最高工作频率。MMD由5级2/3分频器级联而成,由5 bit数字码控制。详细介绍和讨论了2/3分频器和MMD的工作原理和优势。MMD是SSCG的一部分,采用55 nm CMOS工艺进行了流片,芯片面积为35μm×10μm,电源电压为1.2 V,最高工作频率为10 GHz,此时功耗为1.56 m W。更多还原

【Abstract】 Based on the extended true-single-phase-clock( E-TSPC) technique,the implementation of a multi-modulus frequency divider( MMD) was presented. The MMD is a part of a 10 GHz spread-spectrum clock generator and has a frequency dividing ratio range of 32- 63. The proposed 2 /3divider cell based on D flip-flop adopted dynamic E-TSPC technique. This technique reduces the power consumption and chip size,and improves the maximum operating frequency. The MMD consists of a chain of five 2 /3 divider cells and has a 5 bit control word. The operating principle and superiority of the proposed 2 /3 divider cells and MMD were described and discussed. The chip was implemented in 55 nm CMOS process with a small area occupation( about 35 μm × 10 μm). The simulation results indicate a maximum operating frequency of 10 GHz and a power consumption of 1. 56 m W at 1. 2 V power supply.更多还原