A process and temperature compensated two-stage ring oscillator

被引：0
|
作者：
Lakshmikumar, K. R. [1 ]
Mukundagiri, V. [1 ]
Gierkink, S. L. J. [1 ]
机构：
[1] Conexant Syst, Red Bank, NJ 07701 USA
来源：
PROCEEDINGS OF THE IEEE 2007 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2007年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Local positive feedback in a delay element enables a ring oscillator with only two stages to oscillate and produce quadrature clocks. Routh-Hurwitz's criterion is applied to prove that such a structure can oscillate. An internally generated power supply from a constant-gm bias keeps the free running frequency to within +/- 5% from -40 to 125 degrees C over process variations. The 1.25GHz (oscillator in 0.13 mu m CMOS draws 3.4mA and has a phase noise of -88dBc/Hz at 1MHz offset.
引用
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页码：691 / 694
页数：4
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