公开(公告)号：US08400227B2

公开(公告)日：2013-03-19

申请号：US12945308

申请日：2010-11-12

Applicant: Chiao-Ling Chang ,  Ying-Hsi Lin

Inventor： Chiao-Ling Chang ,  Ying-Hsi Lin

IPC: H03L7/099

CPC classification number: H03L1/00 ,  H03L7/085 ,  H03L7/099

Abstract: A clock generator is provided, capable of automatically adjusting an output clock when process, voltage, or temperature variation occurs. The clock generator includes a current generator, for generating a first current and a second current according to a bias signal, an oscillator, coupled to the current generator, for generating a clock signal according to the first current, a frequency detector, coupled to the oscillator, for generating a control signal according to the clock signal and a reference signal, and a bias voltage adjuster, coupled to the current generator and the frequency detector, for adjusting the bias signal according to the control signal. When the signal frequency of the clock signal changes, the bias signal corresponds to the bias voltage adjuster, to adjust the first current and the second current.

Abstract translation: 提供时钟发生器，能够在发生过程，电压或温度变化时自动调整输出时钟。 时钟发生器包括用于根据偏置信号产生第一电流和第二电流的电流发生器，耦合到电流发生器的振荡器，用于根据第一电流产生时钟信号，频率检测器，耦合到 振荡器，用于根据时钟信号和参考信号产生控制信号，以及偏置电压调节器，耦合到电流发生器和频率检测器，用于根据控制信号调整偏置信号。 当时钟信号的信号频率变化时，偏置信号对应于偏置电压调节器，以调整第一电流和第二电流。