Common-mode ripple correction for high-speed transmitters

A method for output common-mode adjustment, the method comprising:

• generating, by a predriver circuit, an input signal to a driver circuit of a complementary metal-oxide semiconductor (CMOS) transmitter, the driver circuit having an output common-mode;
• generating, by a comparator, a control signal using a difference between an average signal value of the output common-mode and a target value;
• and
• adjusting by the predriver circuit, strength of at least one of a pull-up path or a pull-down path in the predriver circuit using the generated control signal.

A system for output common-mode adjustment, the system comprising:

• a predriver comprising circuitry configured to:
• generate an input signal to a driver circuit of a complementary metal-oxide semiconductor (CMOS) transmitter, the driver circuit having an output common-mode;
• receive a control signal indicative of a difference between an average signal value of the output common-mode and a target value;
• and
• adjust strength of at least one of a pull-up path or a pull-down path in the predriver circuit using the received control signal, wherein the output to the driver circuit is generated based at least in part on the strength of the at least one of the pull-up path or the pull-down path adjusted using the received control signal.