A Submicrowatt 1.1-MHz CMOS Relaxation Oscillator With Temperature Compensation

作者：Chiang Yu Hsuan^*; Liu Shen Iuan

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2013, 60(12): 837-841.

DOI：10.1109/TCSII.2013.2281920

• Low power
• relaxation oscillator
• subthreshold
• temperature coefficient

A 1.1-MHz submicrowatt current-mode relaxation oscillator with temperature compensation is presented. In this oscillator, the current-starving inverters are biased by using the current sources with positive and negative temperature coefficients. It relaxes the temperature variations. This oscillator is fabricated in a 0.18-mu m CMOS process, and its area is 0.075 mm(2). The power consumption is 0.859 mu W, with a supply voltage of 1.8 V, and the calculated figure of merit is 0.78 nW/kHz. The measured output relative frequency variation is less than 3%/V for the supply voltage of 1.2-2.4 V and +/- 0.5% for the temperature of -20 degrees C-80 degrees C. The average temperature coefficient is 64.3 ppm/degrees C.

• 出版日期2013-12
• 单位中国科学院电工研究所