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发明授权
US07339407B2 DLL circuit for providing an adjustable phase relationship with respect to a periodic input signal 有权
DLL电路，用于提供相对于周期性输入信号的可调节相位关系

DLL circuit for providing an adjustable phase relationship with respect to a periodic input signal
摘要：
The invention relates to a DLL circuit for providing an adjustable time delay of a periodic input signal, said circuit having controllable delay elements which are connected in series and form a delay chain, having a phase detector in order to generate a control signal on the basis of the periodic input signal and a periodic signal which has been delayed by the delay chain, the delay of each of the delay elements being adjusted on the basis of the control signal, and having a selection unit which is respectively connected to one of the delay elements in order to apply an output signal from one of the delay elements to an output of the DLL circuit on the basis of a selection variable which has been provided, and a compensation circuit which modifies the selection signal such that an additional delay (which is caused at least by the selection unit) between the periodic input signal and the output signal from the DLL circuit is compensated for.
摘要（中）：

本发明涉及一种用于提供周期性输入信号的可调时间延迟的DLL电路，所述电路具有可串联连接并形成延迟链的可控延迟元件，具有相位检测器，以便在此基础上产生控制信号 和延迟链延迟的周期信号，基于控制信号调整每个延迟元件的延迟，并且具有选择单元，其分别连接到延迟链中的一个延迟 元件，以便根据所提供的选择变量将来自延迟元件之一的输出信号施加到DLL电路的输出;以及补偿电路，其修改选择信号，使得附加延迟（即 至少由选择单元引起的）周期性输入信号与来自DLL电路的输出信号进行补偿。

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