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Upstream amp runs on 1.25W

Posted: 07 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:amplifier? power consumption? VoIP?

MAX3518 amplifier

Maxim Integrated Products unveiled the MAX3518 Data Over Cable Service Interface Specification (DOCSIS) 3.0 upstream amplifier. The amplifier uses only 1.25W when configured for 31dB of gain and +64dBmVout. And in transmit-disabled mode, it requires only 25mW and achieves 10dB noise figure and 60dBc of harmonic distortion. The amplifier's low power consumption cuts power-supply requirements and lengthens battery life in battery-backup systems for cable and VoIP modems.

The MAX3518 operates from a single 5V supply that connects to a single pin on the device, simplifying circuit board routing and reducing the required number of external components to only one balun and five 1nF capacitors. Simply adding a standard anti-aliasing filter creates a complete upstream solution.

The MAX3518 is fully specified over the -40C +85C extended temperature range, and is available in a 5mm x 5mm, 20-pin TQFN package. Prices start at $5 (1,000-up, FOB USA). Evaluation kits and reference designs are available.

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