一种通用的CMOS单管脚振荡器  

Universal One-Pin Oscillator in CMOS

作　　者：姜明方 刘章发[1] 苗莹 

机构地区：[1]北京交通大学,电子信息工程学院,北京,100044 北京交通大学,电子信息工程学院,北京,100044 北京交通大学,电子信息工程学院,北京,100044

出　　处：《电脑知识与技术（过刊）》2007年第14期470-471,590,共3页Computer Knowledge and Technology

摘　　要：本文所描述的设计实现了基于0.18-μm CMOS工艺的单端振荡器.由于应用了本文中介绍的电路结构并且其片内集成了15pF用CMOS栅电容实现的电容(包括负载电容),芯片的面积非常小.这种电路可以工作在电源电压1.6-3.6V的电路中,要求的晶体振荡器的频率范围为3-30MHz.电路在27MHz,3.3V的振荡频率下电流功耗为900μA,产生轨到轨的方波输出,拥有与普通皮尔兹振荡器类似的应用灵活和简易的特点,在电路应用要求不十分严格的情况下,设计可以产生满足VLSI芯片数字时钟要求的非常好的波形.A one-pin oscillator has been realized in a standard 0.18-μm CMOS technology present in this paper.Due to the use of the structure of this paper and with an integrated capacitance of CMOS gate capacitance witch is 15 pF include the load capacitors,chip area can be very small.The design can be operated with supply voltages in the range of 1.6-3.6V and allows crystal frequencies in the range of 3-30MHz.The consumption of the oscillator core is 0.9μA at 27MHz with 3.3V power supply.It produces a rail-to-rail output swing,and has the same flexibility and ease of frequency tuning as a common Pierce oscillator.As no special IC process options are required,the design is very suitable for clock generation in digital VLSI.

关 键 词：石英晶体 单端振荡器 CMOS实现 振荡频率 电容网络 

分 类 号：TN401[电子电信—微电子学与固体电子学]