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    • 10. 发明授权
    • Phase frequency detector
    • 相频检测器
    • US06741102B1
    • 2004-05-25
    • US09300757
    • 1999-04-26
    • Thomas P. Thomas
    • Thomas P. Thomas
    • H03L7089
    • H03L7/089H03D13/004H03L7/183
    • Briefly, in accordance with one embodiment, an integrated circuit includes a phase-frequency detector (PFD) including two clock input ports, an up signal port and a down signal port. The PFD includes digital circuitry including transistors coupled in a configuration to adjust an amount of overlap of an up output signal pulse and a down output signal pulse based, at least in part, upon the magnitude of an amount of phase delay between two respective clock signal pulses applied to the two input ports. Of course, additional embodiments are also disclosed.
    • 简而言之,根据一个实施例,集成电路包括包括两个时钟输入端口,上行信号端口和下行信号端口的相位频率检测器(PFD)。 PFD包括数字电路,其包括以配置来耦合的晶体管,以至少部分地基于两个相应时钟信号之间的相位延迟量的大小来调整上输出信号脉冲和下输出信号脉冲的重叠量 施加到两个输入端口的脉冲。 当然,还公开了另外的实施例。