Overview: Set-top Box Solutions Satellite Digital Satellite Tuner
CX24109
Highly Integrated, Direct Down-Conversion Satellite Tuner
Conexant’s broadband munications portfolio includes a prehensive suite of semiconductor solutions that enable the digital home and information network. bining extensive experience in broadband systems and mixedsignal integrated circuit design, Conexant introduces the CX24109 Digital Satellite Tuner – a highly integrated, direct down-conversion satellite tuner intended for high-volume digital video, audio, and data receivers. The CX24109 consists of an LNA, variable RF attenuator, quadrature downconverter, variable IF gain amplifiers, variable low-pass filters, VCO, and synthesizer. This highly integrated satellite tuner RF IC does not require a balun, therefore simplifying RF layout and reducing the overall BOM cost. When bined with Conexant’s CX24123 QPSK demodulator/FEC decoder, the chipset provides a plete broadband satellite front-end solution capable of operating from 1 to 45 Msps in the most demanding satellite environments. The CX24109 and CX24123 provides a streamlined, cost optimized front-end solution offered in a pact design that saves valuable board space and is easy to implement.
