High-speed low-voltage differential swing transmission line transceiver

A data transmitter for converting single-ended digital data to differential data, said transmitter comprising:

• an input terminal;
• first and second parallel conduction paths;
• a first inverter connected in said first conduction path and a transmission gate connected in said second conduction path;
• a switching circuit connected to said first and second conduction paths, said switching circuit providing differential output data in response to single-ended input data at said input terminal;
• and
• a temperature compensation unit connected to said switching circuit, said temperature compensation unit providing a current which increases with increasing temperature so as to compensate for temperature-induced variations in a supply current in said switching circuit.

A receiver for converting differential data to single-ended data, said receiver comprising:

• an input stage terminal;
• an input stage comprising:
• first and second parallel conduction paths;
• a first MOSFET connected in said first conduction path and a second MOSFET connected in said second conduction path;
• and
• a pair of current mirror MOSFETs connected in said first and second conduction paths, respectively;
• an inverter connected to a common node between said first MOSFET and the current mirror MOSFET in said first conduction path;
• and
• a temperature compensation unit connected to said input stage, said temperature compensation unit stabilizing a gain in said input stage.

A receiver for converting differential data to single-ended data, said receiver comprising:

• an input terminal;
• an input stage comprising:
• first and second parallel conduction paths;
• a first MOSFET connected in said first conduction path and a second MOSFET connected in said second conduction path;
• and
• a pair of current mirror MOSFETs connected in said first and second conduction paths, respectively;
• an inverter connected to a common node between said first MOSFET and the current mirror MOSFET in said first conduction path;
• and
• a temperature compensation unit connected to an output of said inverter, said temperature compensation unit providing a current which increases with increasing temperature so as to regulate a rise time of pulses generated at said output of said inverter.

A data transceiver combination comprising:

• a differential swing data transmission line;
• a data transmitter connected to a first end of said transmission line, said data transmitter comprising:
• a first input terminal;
• first and second parallel conduction paths;
• a first inverter connected in said first conduction path and a second inverter connected in said second conduction path;
• a temperature compensation unit connected to an output of said second inverter, said temperature compensation unit providing a current which increases with increasing temperature so as to regulate a rise time of pulses generated at said output of said second inverter;
• and
• a switching circuit connected to said first and second conduction paths, said switching circuit providing differential output data in response to single-ended input data at said first input terminal;
• and
• a receiver connected to a second end of said data transmission line.

A data transceiver combination comprising:

• a differential swing data transmission line;
• a data transmitter connected to a first end of said data transmission line, said data transmitter comprising:
• a first input terminal;
• first and second parallel conduction paths;
• a first inverter connected in said first conduction path and a transmission gate connected in said second conduction path;
• a switching circuit connected to said first and second conduction paths, said switching circuit providing differential output data in response to single-ended input data at said first input terminal;
• and
• a temperature compensation unit connected to said switching circuit, said temperature compensation unit providing a current which increases with increasing temperature so as to compensate for temperature-induced variations in a supply current in said switching circuit;
• and
• a receiver connected to a second end of said data transmission line.

A data transceiver combination comprising:

• a differential swing data transmission line;
• a data transmitter connected at a first end of said data transmission line;
• and
• a data receiver connected to a second end of said data transmission line, said data receiver comprising:
• an input terminal;
• an input stage comprising:
• first and second parallel conduction paths;
• a first MOSFET connected in said first conduction path and a second MOSFET connected in said second conduction path;
• and
• a pair of current mirror MOSFETs connected in said first and second conduction paths, respectively;
• an inverter connected to a common node between said first MOSFET and the current mirror MOSFET in said first conduction path;
• and
• a temperature compensation unit connected to said input stage, said temperature compensation unit stabilizing a gain in said input stage.

A data transceiver combination comprising:

• a data transmission line;
• a data transmitter connected to a first end of said data transmission line;
• and
• a data receiver connected at a second end of said data transmission line, said data receiver comprising:
• an input terminal;
• an input stage comprising:
• first and second parallel conduction paths;
• a first MOSFET connected in said first conduction path and a second MOSFET connected in said second conduction path;
• and
• a pair of current mirror MOSFETs connected in said first and second conduction paths, respectively;
• an inverter connected to a common node between said first MOSFET and the current mirror MOSFET in said first conduction path;
• and
• a temperature compensation unit connected to an output of said inverter, said temperature compensation unit providing a current which increases with increasing temperature so as to regulate a rise time of pulses generated at said output of said inverter.