Apparatus and methods to correct differential skew and/or duty cycle distortion

摘要

One embodiment relates a method of correcting skew and/or duty cycle distortion in a differential signal using a transmitter buffer circuit. Skew and/or duty cycle distortion may be detected in the differential signal. Delay times for at least two variable-delay buffer circuits are adjusted. The variable-delay buffer circuits may have outputs coupled to control gates of pull-up and pull-down transistors coupled to one or more output nodes of the transmitter buffer circuit. Other embodiments, aspects, and features are also disclosed.