Patent ID: 7084677

Claim:
A line driver for driving signals via at least one subscriber line, comprising: an input for injecting an input signal and an output at which a signal which is to be driven via the subscriber line is tapped off; a digital amplifier arranged in a digital path, which digital amplifier produces a digital signal on the output side from one of the input signal or a signal derived from the input signal; an analog amplifier arranged in an analog path, which analog amplifier produces an analog signal on the output side from one of the input signal or a signal derived from the input signal; a feedback path, via which the signal which results from the superimposition of the analog and digital signals is fed back with negative feedback to the input of the analog amplifier; and a matching circuit connected upstream of the analog amplifier in the analog path and carrying out at least one of phase matching or amplitude matching of the input signal to the output signal; wherein the analog path and the digital path are arranged in parallel with one another, wherein the outputs of the amplifiers are coupled such that the signal to be driven results from superimposition of the analog signal and the digital signal, and wherein the gain of the analog amplifier is matched to the gain of the digital amplifier such that at least one of the scatter or overshoot on the digital signal is at least reduced after the superimposition.