公开(公告)号：US09484856B2

公开(公告)日：2016-11-01

申请号：US14152489

申请日：2014-01-10

Applicant: Google Inc.

Inventor： Clemenz Portmann ,  Cheng-Yi Andrew Lin ,  Shahriar Rabii

IPC: H03K3/03 ,  H03B5/06 ,  H03L7/23 ,  H03B27/00 ,  H03L7/24 ,  H03B5/36

CPC classification number: H03B5/06 ,  H03B5/36 ,  H03B5/362 ,  H03B5/364 ,  H03B27/00 ,  H03B2200/0074 ,  H03L7/23 ,  H03L7/24

Abstract: A modulated signal based on a low-precision, fast startup oscillator is provided to a circuit with a high-precision, slow startup oscillator. The frequency of the modulated signal ranges around the characteristic or resonant frequency of the high precision oscillator without using feedback from the high precision oscillator circuit. An implementation can include one or more variable gain circuits that can be adjusted based on an amplitude threshold in relation to the output signal of the high precision oscillator circuit.

Abstract translation: 基于低精度，快速启动振荡器的调制信号被提供给具有高精度，慢启动振荡器的电路。 调制信号的频率围绕高精度振荡器的特性或谐振频率而不使用高精度振荡器电路的反馈。 实施方案可以包括可以基于相对于高精度振荡器电路的输出信号的幅度阈值来调整的一个或多个可变增益电路。