The U2739M-B is an integrated circuit in advanced CMOS technology for demodulation and decoding of a DAB signal according to ETS 300 401. The channel decoder part includes the main features OFDM demodulation & decoding and time & frequency synchronization algorithms, using the embedded OAK DSP core. The source decoder consists of an audio and a data decoder part. The audio source decoder supports ISO MPEG 1,2 layer 2 and the data decoder offers 2 independent packet mode decoders.