A Robust Oscillator for Embedded System without External Crystal

淡江大學機構典藏 > 工學院 > 電機工程學系暨研究所 > 期刊論文 > Item 987654321/92974

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题名:	A Robust Oscillator for Embedded System without External Crystal
作者:	Yang, Wei-Bin;Wang, Chi-Hsiung;Chou, I-Ting
贡献者:	淡江大學電機工程學系
关键词:	Constant current reference;Voltage-Controlled Oscillator;Ring Oscillator
日期:	2012
上传时间:	2013-10-30 14:26:42 (UTC+8)
出版者:	Montgomery: Dixie W Publishing Corporation
摘要:	The robust voltage-oscillator is presented by using the constant current reference and the ring oscillator for the embedded system application.The constant current reference generates the constant current for the succeeding ring oscillator to produce a stable 4MHz oscillation frequency.The proposed VOC circuit was fabricated in a 0.35 um CMOS technology and worked with a supply voltage of 3.3V.The chip area of the VCO was 150 um x 130 um.According to measured results, the oscillator frequency drift of proposed VCO was 986 ppm/℃ over a temperature range of -25℃ to 100℃.The phase noise of -62.29 dBc/Hz was obtained at 1MHz offset from the carrier.Moreover, total current consumption of the entire VOC was 234.72 uA. Therefore, the proposed VCO is suitable for integration into the embedded system.
關聯:	Applied Mathematics & Information Sciences
显示于类别:	[電機工程學系暨研究所] 期刊論文

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