An interface such a PCI-E interface may comprise a transmitter and a compensation circuit. In one embodiment, the transmitter may comprise a transmit driver, which may use a push-pull configuration. The transmit driver may require stable voltages such as (Vdd/2+0.25) and (Vdd/2−0.25) Volts. The compensation circuit may comprise a voltage generator circuit and a dummy driver circuit. The dummy driver may be a replica of the transmit driver. A correction module may generate correction factors based on the deviation of the voltages generated by the dummy driver from the voltages generated by the voltage generator. The voltages provided to the transmit driver are corrected based on the correction factors to compensate for the deviation.