公开(公告)号：US06774731B2

公开(公告)日：2004-08-10

申请号：US10244113

申请日：2002-09-13

申请人： Antonio Magazzu ,  Benedetto Marco Marletta ,  Giuseppe Gramegna ,  Alessandro D'Aquila

发明人： Antonio Magazzu ,  Benedetto Marco Marletta ,  Giuseppe Gramegna ,  Alessandro D'Aquila

IPC分类号： H03L706

CPC分类号： H03K17/162 ,  H03L7/0891 ,  H03L7/183

摘要： A method and a circuit for minimizing glitches in phase-locked loops is presented. The circuit includes an input terminal connected to an input of a phase detector; a series of a charge pump generator, a filter and a voltage controlled oscillator connected downstream of the phase detector; and a frequency divider feedback connected between an output of the voltage controlled oscillator and a second input of the phase detector. The circuit provides for the inclusion of a compensation circuit connected between the charge pump generator and the filter to absorb an amount of the charge passed therethrough. This compensation circuit includes a storage element connected in series to two switches. The first switch is coupled to and controlled by an output of the charge pump and the second switch is coupled to and controlled by an output of a phase detector.

摘要翻译： 提出了一种用于最小化锁相环中的毛刺的方法和电路。 电路包括连接到相位检测器的输入端的输入端子; 一系列电荷泵发生器，滤波器和连接在相位检测器下游的压控振荡器; 以及连接在压控振荡器的输出端和相位检测器的第二输入端之间的分频器反馈。 该电路提供包括连接在电荷泵发生器和滤波器之间的补偿电路，以吸收一定量的通过其的电荷。 该补偿电路包括与两个开关串联连接的存储元件。 第一开关耦合到电荷泵的输出并由电荷泵的输出控制，第二开关耦合到相位检测器的输出并由相位检测器的输出控制。

公开(公告)号：US06593817B1

公开(公告)日：2003-07-15

申请号：US09553612

申请日：2000-04-20

申请人： Antonio Magazz' ,  Benedetto Marco Marletta ,  Giuseppe Gramegna ,  Alessandro D'Aquila

发明人： Antonio Magazz' ,  Benedetto Marco Marletta ,  Giuseppe Gramegna ,  Alessandro D'Aquila

IPC分类号： H03L706

CPC分类号： H03K17/162 ,  H03L7/0891 ,  H03L7/183

摘要： A method and a circuit for minimizing glitches in phase-locked loops is presented. The circuit includes an input terminal connected to an input of a phase detector; a series of a charge pump generator, a filter and a voltage controlled oscillator connected downstream of the phase detector; and a frequency divider feedback connected between an output of the voltage controlled oscillator and a second input of the phase detector. The circuit provides for the inclusion of a compensation circuit connected between the charge pump generator and the filter to absorb an amount of the charge passed therethrough. This compensation circuit includes a storage element connected in series to two switches. The first switch is coupled to and controlled by an output of the charge pump and the second switch is coupled to and controlled by an output of a phase detector.

摘要翻译： 提出了一种用于最小化锁相环中的毛刺的方法和电路。 电路包括连接到相位检测器的输入端的输入端子; 一系列电荷泵发生器，滤波器和连接在相位检测器下游的压控振荡器; 以及连接在压控振荡器的输出端和相位检测器的第二输入端之间的分频器反馈。 该电路提供包括连接在电荷泵发生器和滤波器之间的补偿电路，以吸收一定量的通过其的电荷。 该补偿电路包括与两个开关串联连接的存储元件。 第一开关耦合到电荷泵的输出并由电荷泵的输出控制，第二开关耦合到相位检测器的输出并由相位检测器的输出控制。