Patent ID: 8466982

Claim:
A transmitter comprising: a pre-driver coupled to receive a data signal and to output driver input voltages based on the data signal; a driver coupled to the pre-driver, the driver including a first set of circuit elements coupled in series with one another, wherein the first set of circuit elements are coupled to provide a first output signal of a differential output based on the driver input voltages; and a first regulator circuit coupled to provide regulated power to the driver, the first regulator circuit including: a first transistor coupled between the driver and a supply voltage rail; a scale replica circuit having a replica of the first set of circuit elements; and an error amplifier, wherein the scale replica circuit and the first transistor are both coupled to an output of the error amplifier, wherein the scale replica circuit is coupled to provide a feedback voltage to the error amplifier, wherein the error amplifier is coupled to amplify a difference between the feedback voltage and a reference voltage.