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1. 发明申请

US20160308538A1 PHASE-LOCKED LOOP WITH LOWER POWER CHARGE PUMP 有权
标题翻译：具有较低功率充电泵的相位锁定环
公开(公告)号：US20160308538A1
公开(公告)日：2016-10-20
申请号：US15194533
申请日：2016-06-27
申请人： INTEL CORPORATION
发明人： Gennady GOLTMAN , Yongping FAN , Kuan-Yueh SHEN
IPC分类号： H03L7/08 , H03L7/093 , H03L7/089
CPC分类号： H03L7/0802 , H03L7/085 , H03L7/089 , H03L7/0895 , H03L7/093
摘要： Described is a phase-locked loop with lower power charge pump. The phase-locked loop comprises: a phase frequency detector to compare a reference clock and a feedback clock and generate a pulse based on the comparison, a charge pump to provide a charge signal corresponding to the pulse, a bias generator to provide biasing for the charge pump, wherein the bias generator is operable to receive a bias enable signal from the phase frequency detector and the bias generator is disabled when the bias enable signal is not asserted, a loop filter coupled to the output of the charge pump to provide a control signal responsive to the charge signal, and a voltage-controlled oscillator (VCO), wherein the oscillating frequency of the VCO is controlled by the control signal.
摘要翻译：描述的是具有较低功率电荷泵的锁相环。锁相环包括：相位频率检测器，用于比较参考时钟和反馈时钟，并基于比较产生脉冲，电荷泵以提供对应于脉冲的电荷信号;偏置发生器，用于为电荷泵，其中所述偏置发生器可操作以从所述相位频率检测器接收偏置使能信号，并且当所述偏置使能信号未被置位时，所述偏置发生器被禁用;环路滤波器耦合到所述电荷泵的输出以提供控制响应于充电信号的信号，以及压控振荡器（VCO），其中VCO的振荡频率由控制信号控制。

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