Invention Application
US20160315641A1 COMMON-MODE RIPPLE CORRECTION FOR HIGH-SPEED TRANSMITTERS 审中-公开
用于高速发射机的共模纹波校正

  • Patent Title: COMMON-MODE RIPPLE CORRECTION FOR HIGH-SPEED TRANSMITTERS
  • Patent Title (中): 用于高速发射机的共模纹波校正
  • Application No.: US14715862
    Application Date: 2015-05-19
  • Publication No.: US20160315641A1
    Publication Date: 2016-10-27
  • Inventor: Bharath Raghavan
  • Applicant: Broadcom Corporation
  • Main IPC: H04B1/04
  • IPC: H04B1/04
COMMON-MODE RIPPLE CORRECTION FOR HIGH-SPEED TRANSMITTERS
Abstract:
In some aspects, the disclosure is directed to methods and systems for common-mode ripple correction for high-speed transmitters. In one or more embodiments, the system includes a driver circuit of a complementary metal-oxide semiconductor (CMOS) transmitter. In one or more embodiments, the driver circuit has an output common-mode. In one or more embodiments, the system includes a predriver circuit with an output in electrical communication with an input of the driver circuit. In one or more embodiments, a comparator generates a control signal using a difference between an average signal value of the output common-mode and a target value. In one or more embodiments, the comparator block generates signals which can be used to adjust the strength of at least one of a pull-up path or a pull-down path in the predriver circuit.
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