Patent ID: 8773417

Claim:
A system for transmitting and receiving a signal, the system comprising: a transmitter switching a first reference voltage and a second reference voltage and generating first and second voltage signals; and a receiver including an input resistor having two terminals respectively receiving the first and second voltage signals, wherein the transmitter comprises: a reference voltage generator generating the first reference voltage and the second reference voltage; and a switch block switching the first reference voltage and the second reference voltage and outputting the first and second voltage signals, and comprising: a first switch array switching the first reference voltage in response to at least one of a plurality of switch control signals to output the second voltage signal; a second switch array switching the first reference voltage in response to at least one of a second plurality of switch control signals to output the first voltage signal; a third switch array switching the second reference voltage in response to at least one of a third plurality of switch control signals to output the second voltage signal; and a fourth switch array switching the second reference voltage in response to at least one of a fourth plurality of switch control signals to output the first voltage signal, wherein at least one of each one of the first plurality of switch control signals, the second plurality of switch control signals, the third plurality of switch control signals, and the fourth plurality of switch control signals is determined by at least one of a voltage gain between the transmitter and the receiver, and a frequency range for the first and second voltage signals.