A 1.2-V CMOS RC Oscillator for Capacitive and Resistive Sensor Applications

被引：26

作者：

Lasanen, Kimmo ^{[1
]}

Kostamovaara, Juha ^{[1
]}

机构：

[1] Univ Oulu, Elect & Informat Engn Dept, Elect Lab, Oulu 90014, Finland

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2008年 / 57卷 / 12期

基金：

芬兰科学院;

关键词：

Capacitance measurement; CMOS analog integrated circuits; relaxation oscillators; resistance measurement;

D O I：

10.1109/TIM.2008.927213

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：

An accurate self-adjusting CMOS RC oscillator for capacitive and resistive sensor applications has been designed and manufactured. The oscillator operates with supply voltages from 1.2 to 3 V and achieves an internal accuracy of +/- 0.7% with a temperature range from -20 degrees C to 60 degrees C. The RC oscillator was fabricated in a 0.35-mu m standard n-well CMOS process with threshold voltages of 0.5 and -0.65 V. Its design and operation are described, and results of measurements performed on the fabricated chips are presented.

引用

页码：2792 / 2800

页数：9

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