The invention provides an interface apparatus for data recovery which supplies an analog signal (applied to the input and containing data in line with a coding) having a first component and a second component to a signal processor. From this, the signal processor produces a continuous, demodulated data stream. The data stream is supplied to a connected delay unit, whose output is designed to provide the stored data symbols and whose delay in provision can be set by a signal at a control input. The interface allows a digital modulator to be connected to an analog I/Q interface on a baseband unit.