Patent ID: 7642819

Claim:
An integrated circuit including a current mode write driver, said write driver comprising: a switching control circuit comprising (i) a DC current control circuit operable to directly convert a received ECL differential voltage signal into first, second, third and fourth DC output currents, and (ii) a boost current control circuit operable to directly convert a received level shifted version of said ECL differential voltage signal and a delayed version of said ECL differential voltage signal into first, second, third and fourth boost output currents, and an H-bridge circuit comprising an output stage including first and second current sourcing nodes and first and second current sinking control nodes, a first output node between said first sourcing and said first sinking control nodes and second output node between said second sourcing and said second sinking nodes, and a first, second, third and fourth current mirror comprising input each coupled to one of said sourcing or said sinking control nodes operable to receive one of said DC output currents and one of said boost output currents for switchably delivering current diagonally through a load connect between said first and second output nodes.