Transmitter and driver architectures

A system comprising:

• a transmission line having a transmitting end and a receiving end;
• a receiver electrically coupled to the receiving end of the transmission line;
• and
• a transmitter comprising:
• an input;
• an output electrically coupled to the transmitting end of the transmission line;
• a current source;
• a first switch configured to electrically couple the current source to the output;
• a current sink;
• a second switch configured to electrically couple the current sink to the output;
• and
• a driver configured to modulate states of the output to reflect states of the input by:
• detecting an input state of the input;
• in response to detecting the input state of the input, providing a respective control signal changing the output to an output state corresponding to the input state of the input by:
• electrically coupling, via the first switch, the current source to the output such that the output has a first amplitude;
• electrically coupling, via the second switch, the current sink to the output;
• or
• electrically coupling, via the first switch, the current source to the output such that the output has a second amplitude distinct form the first amplitude.

A method for modulating an output of a transmitter, the method comprising:

• detecting a first input state of an input of the transmitter;
• changing the output to a first output state corresponding to the first input state of the input by electrically coupling, via a first switch, a current source to the output;
• detecting a second input state of the input;
• changing the output to a second output state corresponding to the second input state of the input by electrically coupling, via a second switch, a current sink to the output;
• detecting a third input state of the input;
• and
• changing the output to a third output state corresponding to the third input state of the input by electrically coupling, via the first switch, the current source to the output.