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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/75309


    Title: Supply Voltage and Temperature Insensitive Current Reference for the 4 MHz Oscillator
    Authors: Wang, Chi-hsiung;Lin, Cheng-feng;Yang, Wei-bin;Lo, Yu-lung
    Contributors: 淡江大學電機工程學系
    Keywords: current reference;ring oscillator;supply voltage
    Date: 2011-12-13
    Issue Date: 2012-03-19 16:09:21 (UTC+8)
    Publisher: NanYang Technological University; IEEE Singapore Section
    Abstract: This paper presents a 4 MHz current control ring oscillator with a new temperature and supply voltage immune current reference implemented by 0.35um CMOS technology. Compared to the conventional oscillator with current reference techniques, the proposed approach shows a significant improvement for the sensitivities of temperature and supply voltage. The current reference is designed by combining positive and negative temperature effect circuits, such that it can exempt from the temperature and supply voltage variations. By HSPICE simulation, this new current reference is insensitive to the supply voltage with variations of -0.47%~0.67% over the supply voltage range of 2.97V to 3.63V, and it is also insensitive to the temperature with variation of 366 ppm/C over the temperature range of -40C to 100C. The proposed oscillator frequency is insensitive to the supply voltage with variations of -15%~20% over the supply voltage range of 2.97V to 3.63V, and it is insensitive to temperature with variation of 404 ppm/C over the temperature range of -40C to 100C.
    This paper presents a 4 MHz current control ring oscillator with a new temperature and supply voltage immune current reference implemented by 0.35nm CMOS technology. Compared to the conventional oscillator with current reference techniques, the proposed approach shows a significant improvement for the sensitivities of temperature and supply voltage. The current reference is designed by combining positive and negative temperature effect circuits, such that it can exempt from the temperature and supply voltage variations. By HSPICE simulation, this new current reference is insensitive to the supply voltage with variations of -0.47%~0.67% over the supply voltage range of 2.97V to 3.63V, and it is also insensitive to the temperature with variation of 366 ppm/°C over the temperature range of -40°C to 100°C. The proposed oscillator frequency is insensitive to the supply voltage with variations of -15%~20% over the supply voltage range of 2.97V to 3.63V, and it is insensitive to temperature with variation of 404 ppm/°C over the temperature range of-40°C to 100°C.
    Relation: 2011 13th International Symposium on Integrated Circuits (ISIC), Singapore, pp.35-38
    Appears in Collections:[電機工程學系暨研究所] 會議論文

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