公开(公告)号：US20060132245A1

公开(公告)日：2006-06-22

申请号：US11304382

申请日：2005-12-15

申请人： Sebastien Dedieu ,  Frederic Paillardet ,  Gerald Provins

发明人： Sebastien Dedieu ,  Frederic Paillardet ,  Gerald Provins

IPC分类号： H03L7/00

CPC分类号： H03L7/087 ,  H03L7/085 ,  H03L7/0895

摘要： A method for correcting the phase difference between two input signals of a phase-locked loop may include a charge pump connected to a filter. Prior to the occurrence of the first of the two input signals, a calibration phase may be carried out in which the input of the filter is disconnected from the output of the charge pump, the output voltage from the charge pump is equalized, to within a given error, with the input voltage of the filter, the amplitudes of the opposing currents flowing in the charge pump being equalized. Then, during the two respective occurrences of the two input signals, the input of the filter is reconnected to the output of the charge pump, and two phase-shifted signals that are delayed with respect to the input signals are respectively generated, in response to which the two opposing currents are, respectively and successively, interrupted, before the calibration phase is recommenced.

摘要翻译： 用于校正锁相环路的两个输入信号之间的相位差的方法可以包括连接到滤波器的电荷泵。 在发生两个输入信号中的第一个信号之前，可以执行校准阶段，其中滤波器的输入与电荷泵的输出断开，来自电荷泵的输出电压相等， 给定误差，在滤波器的输入电压下，在电荷泵中流动的相对电流的幅度相等。 然后，在两个输入信号的两个相应出现期间，滤波器的输入被重新连接到电荷泵的输出，并且分别产生相对于输入信号延迟的两个相移信号，响应于 在校准阶段重新开始之前，两个相对的电流分别和相继地中断。