The U2730B-B is a monolithic integrated L-band downconverter circuit fabricated in TEMIC's advanced UHF5S technology. Combining the functionality of U2754B-B and U2755B-B in one integrated circuit, it covers all functions of an L-band down-converter in a DAB receiver. The device includes a gain-controlled amplifier, a gain-controlled mixer, an output buffer, a gain-control block, an L-band oscillator and a complete frequency syntheziser unit. The frequency syntheziser