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Amplifiers/Converters??

Programmable-gain upstream amplifier zooms in on cable

Posted: 29 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:CATV power amplifier? DOCSIS 2.0? cable applications?

RF Micro Devices has released the S518324-44Z programmable-gain upstream power amplifier. The S518324-44Z is designed for cable applications including digital cable-ready TVs, STBs and digital video recorders (DVRs) as well as DOCSIS 2.0 compliant cable modems. The S518324-44Z enables cable operators to serve the rapidly growing consumer demand for interactive services and increased upstream data rates.

The S518324-44Z delivers best-in-class current consumption of 143mA, thus reducing the cable device's thermal profile and satisfying stringent OEM requirements for thermal management. The S518324-44Z also features an industry-leading 63dB dynamic range with an ultrafine 0.5dB gain step resolution. Finally, the S518324-44Z exceeds the DOCSIS 2.0 specification, providing cable STB and modem designers with significant headroom for improving performance over current generation solutions.

Technical features of the S518324-44Z include single 3.3V supply operation and an operating frequency range of 5-65MHz. The device also features low harmonics of -60dBc typical at 60dBmV and a 3-wire serial interface for dynamic range control as well as DOCSIS 2.0 and EuroDOCSIS 2.0 compliance.

The S518324-44Z is housed in a RoHS compliant, thermally enhanced 4mm x 4mm QFN20 package with immediate mass production availability. RFMD anticipates shipments will commence this quarter.





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