Patent ID: 8275012

Claim:
A laser diode read driver, comprising: a first transistor operative for producing a first voltage in response to receiving a first current signal; a first resistor coupled between the first transistor and a low voltage supply; a first transconductor having a first input coupled to receive the first voltage, wherein the transconductor produces a second current signal in response to differences between signals received on the first input and a second input; a second transistor coupled to the second input, and operative for producing a third current signal in response to receiving the second current signal; a third transistor coupled to the second transistor and the second input, the third transistor operative for producing an output current signal in response to receiving the third current signal, wherein the first transistor is scaled to the third transistor by the inverse of a gain factor; and a second resistor coupled between the third transistor and the low voltage supply, wherein the first resistor is scaled to the second resistor by the gain factor.