SOC用400~800MHz锁相环IP的设计

被引:6
作者
樊勃
戴宇杰
张小兴
吕英杰
机构
[1] 南开大学微电子研究所
关键词
时钟产生电路; 锁相环; 压控振荡器;
D O I
暂无
中图分类号
TN402 [设计];
学科分类号
080903 ; 1401 ;
摘要
设计了一个基于锁相环结构、可应用于SOC设计的时钟产生模块。电路输出频率在400~800MHz,使用SMIC0.18μm CMOS工艺进行流片。芯片核心模块工作电压为1.8V和3.3V。根据Hajimi关于VCO中抖动(jitter)的论述,为了降低输出抖动,采用一种全差动、满振幅结构的振荡器;同时,通过选取合适的偏置电流,实现对环路带宽的温度补偿。流片后测试结果为:输出频率范围400~800MHz,输入频率40~200MHz;在输出频率为800MHz时,功耗小于23mA,周期抖动峰峰值为62.5ps,均方根(rms)值为13.1ps,芯片面积0.6mm2。
引用
收藏
页码:743 / 747
页数:5
相关论文
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