公开(公告)号：US20220123691A1

公开(公告)日：2022-04-21

申请号：US17564595

申请日：2021-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanqin CHEN ,  Chunbiao WU ,  Yongwang LIU ,  Bingzhao ZHANG

IPC: H03B5/24

Abstract: Embodiments of this application disclose an RC oscillator. The RC oscillator may amplify a difference between a first voltage and a second voltage by using a first amplifier and a second amplifier. The first amplifier may include a first amplification circuit and a second amplification circuit. The first amplification circuit and the second amplification circuit may share a same voltage-current conversion circuit. The RC oscillator disclosed in the embodiments of this application can not only avoid noise introduced by the first amplifier, but also reduce internal noise of the RC oscillator. This reduces a jitter of a clock signal.

公开(公告)号：US20180173670A1

公开(公告)日：2018-06-21

申请号：US15847555

申请日：2017-12-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Junming HAN ,  Bingzhao ZHANG ,  Jie PENG ,  Yongwang LIU

IPC: G06F13/42 ,  H03F3/45 ,  G06F13/40

CPC classification number: G06F13/4282 ,  G06F13/4072 ,  H03F3/2171 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45659 ,  H03F3/4569 ,  H03F2203/45276 ,  H03F2203/45418 ,  H03F2203/45426 ,  H03F2203/45466

Abstract: A drive circuit for a serial communications system is provided. The drive circuit may include a mode controller, a pre-drive circuit, and a main drive circuit. The main drive circuit includes multiple mode control switches and at least one pair of differential switches. The mode controller is configured to: generate a mode control signal, and transmit the mode control signal to the main drive circuit. The pre-drive circuit is configured to: convert a differential digital signal into a differential control signal, and transmit the differential control signal to the main drive circuit. The main drive circuit controls on/off states of the multiple mode control switches according to the mode control signal, and works in corresponding working modes. The drive circuit controls the states of the mode control switches in the main drive circuit, so that the main drive circuit works in different working modes.