一种高精度低功耗CMOS RC振荡器  

A High-Precision Low-Power CMOS RC Oscillator

作　　者：熊立志[1,2] 王振华 殷少飞 武岳山 

机构地区：[1]远望谷信息技术股份有限公司,广东深圳518057 [2]清华大学微电子学研究所,北京100084

出　　处：《微电子学》2008年第5期748-751,756,共5页Microelectronics

摘　　要：一般情况下,RC振荡器利用电阻电容充放电时延产生振荡,所产生的频率受电源电压、环境温度,以及组成振荡器的各种元器件的电学特性的影响较大。文章提出一种可大大降低上述各种因素影响的高精度CMOS RC振荡器。仿真计算及实际流片测试结果均表明,该CMOS RC振荡器具有较高的频率稳定性。In general, RC oscillator generates oscillating signals by using charge and discharge delay of resistors and capacitors. Therefore, the frequency generated by oscillator is subject to variation of power supply, environment temperature, and electric characteristics of components that make up the oscillator. This paper proposed a high resolution CMOS RC oscillator, which could reduce the above-mentioned effects. Simulation and test results of an actual circuit showed that the proposed CMOS RC oscillator operated at a very stable frequency.

关 键 词：RC振荡器 CMOS集成电路 模拟集成电路 

分 类 号：TN752.4[电子电信—电路与系统] TN432