Circuit and method for signal conversion

A method of converting a pair of differential input signals by a circuit, the method comprising:

• generating first, second, third and fourth voltage signals based on said pair of differential input signals, wherein said first and second voltage signals are both referenced to a first supply voltage terminal and wherein said third and fourth voltage signals are both referenced to a second supply voltage terminal;
• applying said first voltage signal to a first main current node of a first transistor and said second voltage signal to a control node of said first transistor, wherein a second main current node of said first transistor is coupled to an output node of the circuit;
• and
• applying said third voltage signal to a first main current node of a second transistor and a fourth voltage signal to a control node of said second transistor, wherein a second main current node of said second transistor is coupled to said output node of the circuit, and wherein the pair of differential input signals has a voltage swing that is different from a voltage swing of an output signal generated at the output node of the circuit.

A circuit comprising:

• an output node;
• a first transistor comprising a p-channel MOS transistor having a first main current node coupled to a first node for receiving a first voltage signal, a control node coupled to a second node for receiving a second voltage signal, and a second main current node coupled to said output node;
• a second transistor comprising an n-channel MOS transistor having a first main current node coupled to a third node for receiving a third voltage signal, a control node coupled to a fourth node for receiving a fourth voltage signal, and a second main current node coupled to said output node;
• and
• circuitry configured to generate said first, second, third and fourth voltage signals based on a pair of differential input signals and to provide said first, second, third and fourth voltage signals to said first, second, third, and fourth nodes, respectively, wherein said first and second voltage signals are both referenced to a first supply voltage terminal and wherein said third and fourth voltage signals are both referenced to a second supply voltage terminal.