Patent ID: 7034574

Claim:
A differential signal output driver circuit comprising: a first voltage source; a second voltage source; a first bias terminal; a second bias terminal; a first switching terminal; a second switching terminal; a first output terminal; a second output terminal; a first switching field effect transistor having a source terminal coupled to the first voltage source, a gate terminal coupled to the second switching terminal, and a drain terminal; a second switching field effect transistor having a source terminal coupled to the first voltage source, a gate terminal coupled to the first switching terminal, and a drain terminal; a first bias field effect transistor having a source terminal coupled to the drain terminal of the first switching field effect transistor, a gate terminal coupled to the first bias terminal, and a drain terminal coupled to the first output terminal; a second bias field effect transistor having a source terminal coupled to the drain terminal of the second switching field effect transistor, a gate terminal coupled to the first bias terminal, and a drain terminal coupled to the second output terminal; a resistor coupled between the first output terminal and the second output terminal; a third switching field effect transistor having a source terminal coupled at least indirectly to the second voltage source, a gate terminal coupled to the second switching terminal, and a drain terminal coupled at least indirectly to the drain terminal of the first bias field effect transistor; and a fourth switching field effect transistor having a source terminal coupled at least indirectly to the second voltage source, a gate terminal coupled to the first switching terminal, and a drain terminal coupled at least indirectly to the drain terminal of the second bias field effect transistor.