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公开(公告)号：US5699387A
公开(公告)日：1997-12-16
申请号：US80183
申请日：1993-06-23
CPC分类号： H04L7/033 , H03L7/0895
摘要： A phase locked loop is comprised of a phase-frequency detector for providing to a charge pump up and down pulse signals having pulse widths proportional to phase differences between a pair of signals applied thereto, apparatus for introducing a relative phase difference between a first clock signal and a second signal to provide the pair of signals, the second signal being synchronized with an output signal of the loop, apparatus for providing a third up or down signal to the charge pump offsetting the effect of the introduced phase difference, and apparatus for obtaining a loop control voltage from the charge pump.
摘要翻译： 锁相环由相位频率检测器构成，用于向电荷泵提供上下脉冲信号，脉冲信号具有与施加到其上的一对信号之间的相位差成比例的脉冲宽度;用于引入第一时钟信号之间的相对相位差的装置 以及提供所述一对信号的第二信号，所述第二信号与所述环路的输出信号同步，用于向抵消引入的相位差的影响的电荷泵提供第三上升或下降信号的装置，以及用于获得 来自电荷泵的回路控制电压。
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2.发明授权Voltage to current converter with independent loop gain and frequency control 失效具有独立环路增益和频率控制的电压到电流转换器
公开(公告)号：US5459653A
公开(公告)日：1995-10-17
申请号：US80111
申请日：1993-06-23
CPC分类号： H03L7/099 , H03L7/093 , H03L7/0891 , H03L7/0995 , H03L7/18
摘要： A voltage to current converter is formed of a first current steering mirror which includes first binary weighted current mirror transistors and receives an input voltage signal and converts it to an output current. The converter also is formed of a second current mirror which generates a selectable output current, the second current mirror being formed of second binary weighted current mirror transistors. The output currents of the first current steering mirror and second current mirror are added and the sum is provided to the control input of a current controlled oscillator which can be used in a phase locked loop.
摘要翻译： 电压 - 电流转换器由包括第一二进制加权电流镜晶体管并接收输入电压信号并将其转换为输出电流的第一电流导向镜形成。 转换器还由产生可选输出电流的第二电流镜形成，第二电流镜由第二二进制加权电流镜晶体管形成。 第一电流导流镜和第二电流镜的输出电流相加，并且将和提供给可在锁相环中使用的电流控制振荡器的控制输入。
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