首页>
外国专利>
Digital fractional-N PLL based upon ring oscillator delta-sigma frequency conversion
Digital fractional-N PLL based upon ring oscillator delta-sigma frequency conversion
展开▼
机译:基于环形振荡器delta-sigma频率转换的数字小数N分频PLL
展开▼
页面导航
摘要
著录项
相似文献
摘要
A frequency-to-digital-converter based PLL (FDC-PLL) that implements the functionality of a charge pump and analog-to-digital converter (ADC) with a dual-mode ring oscillator (DMRO) and digital logic. Preferred embodiments of the invention include circuit-level techniques that provide better spurious tone performance and very low phase noise with lower power dissipation and supply voltage than prior digital PLLs known to the inventors.
展开▼