公开(公告)号：US06778026B2

公开(公告)日：2004-08-17

申请号：US10053480

申请日：2002-01-15

Applicant: Jonathon Cheah ,  Christopher Yong ,  Minjie Wu

Inventor： Jonathon Cheah ,  Christopher Yong ,  Minjie Wu

IPC: H03L700

CPC classification number: H03D13/004 ,  H03L7/0896 ,  H03L7/18

Abstract: A high-speed phase-frequency detection module is described to function at very high frequencies and to produce very low jitter. In one embodiment, high-speed phase-frequency detection module includes a PFD with edge-triggered asynchronous-reset true-single-phase-clocking (“TSPC”) D flip-flops that have very short CLK to Q and Reset to Q time delays. In one embodiment, the high-speed phase-frequency detection module includes a charge pump, without replica or feedback, that can respond to the very narrow pulses from the PFD and produce output voltages with small ripple, thus leading to low VCO output jitter.

Abstract translation: 高速相位频率检测模块被描述为在非常高的频率下工作并产生非常低的抖动。 在一个实施例中，高速相位频率检测模块包括具有边沿触发异步复位的真 - 单相时钟（“TSPC”）D触发器的PFD，其具有非常短的CLK到Q和复位到Q时间 延误 在一个实施例中，高速相位频率检测模块包括无需复制或反馈的电荷泵，其可响应来自PFD的非常窄的脉冲并产生具有小纹波的输出电压，从而导致低VCO输出抖动。