1. An apparatus for processing a signal depending on a received radio frequency signal, comprising: a first semiconductor circuit including a first part of a radio frequency receiver and a first data converter configured to convert a data value of the signal depending on the received radio frequency signal from a first data format to a second data format; a second semiconductor circuit including a second part of the radio frequency receiver and a second data converter configured to convert data representing the data value in the second data format to the first data format; and a digital interface configured to transmit data related to the signal depending on the received radio frequency signal from the first semiconductor circuit to the second semiconductor circuit, wherein the first data converter is configured to provide the data representing the data value in the second data format to the digital interface.