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第 35 卷第 4 期微电子学 Vol 35 , №4
2005 年 8 月 Microelect ronics Aug 2005
文章编号:1004 3365 (2005) 04 0433 04
一种基于电流舵逻辑的环形振荡器
吴苗松, 张奇, 陈勇
(电子科技大学微电子学与固体电子学学院, 四川成都 610054)
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摘要: 文章分析了电流舵逻辑门的动/ 静态特性。为了比较电流舵环形振荡器和普通数字反相
器环形振荡器,采用 1 2μm 标准 CMOS 工艺,设计并制作了两种环形振荡器。仿真和试验结果表
明,电流舵环形振荡器具有低噪声和频率不随电压变化的特点,但其功耗比较大,适合于噪声要求
高而功耗要求不高的电路。
关键词: 电流舵逻辑; 数字反相器; 环形振荡器
中图分类号: TN432 文献标识码: A

A Current Steering Logic Based Ring Oscillator
WU Miao song , ZHAN G Qi , CH EN Yong
( School of Microelectronics and Solid State Electronics , Univ of Elec Sci & Technol of China , Chengdu, Sichuan 610054 , P R China)

Abstract : Both static and dynamic characteristics of current steering logic (CSL) are analyzed in the paper Ring
posed of CSL’s and conventional digital inverters , which are fabricated in 1 2μm CMOS process , are
compared for their differences It can be concluded from the simulation and experimental results that ring oscillators
based on CSL have good noise performance and are more immune from supply voltage fluctuation , except that it con
sumes more power Therefore , the CSL based ring oscillator is suitable for low noise applications
Key words : Current steering logic ; Digital inverter ; Ring oscillator
: 2570D

二极管连接的 NMOS 管( M d ) , 和一个 PMOS 管
1 引言( Mc ) 电流源组成,如图 1 所示。
环