| 摘要 |
The present invention relates to a low-voltage differential signalling transmitter, more particularly to the technology that enables the low-voltage differential transmitter to have output resistance characteristics that are insensitive to process variation. The present invention comprises: an input drive unit comprising a plurality of pre-drivers for outputting a plurality of drive signals having a pull-up voltage level by driving positive input signals and negative input signals, and a plurality of drive signals having a pull-down voltage level; a voltage generator for regulating a power supply voltage and generating a first drive voltage; and a main drive unit comprising a plurality of switching devices that are selectively turned on by the plurality of drive signals to selectively supply the first drive voltage to a differential output terminal, wherein the turn-on resistance of the plurality of switching devices is controlled by the pull-up voltage level and the pull-down voltage level. |
