Patent ID: 7012450

Claim:
A low-voltage differential signal driver having first and second output terminals, the low-voltage differential signal driver comprising: a current sourcing circuit adapted to generate a current; a current steering circuit coupled to receive the generated current and first and second input signals, wherein in response to the first and second input signals the current steering circuit steers the current either in a first direction to generate a positive differential voltage across the first and second output terminals or in a second direction to generate a negative differential voltage across the first and second output terminals; a current sinking circuit coupled to the current steering circuit and adapted to receive and sink the generated current; a voltage dividing circuit disposed between the first and second output terminals and adapted to divide the voltage generated between the first and second output terminals; a first voltage regulating circuit coupled to the current sinking circuit and the current steering circuit at a first node adapted to maintain a voltage that remains constant as a resistance of an external load coupled between the first and second output terminals varies; and a second voltage regulating circuit coupled to the current sourcing circuit and the voltage dividing circuit.