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LNA claims industry first for GPS

Posted: 30 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:SMA661AS? low-noise amplifier? LNA? GPS? global-positioning system?

STMicroelectronics has expanded its family of silicon monolithic microwave IC amplifiers with a single-chip product designed for use in electronic devices embedding a GPS function.

The company reports that its SMA661AS is the first low-noise amplifier (LNA) with integrated matching networks and an embedded power-down function. The chip, which requires one external input capacitor, is designed to reduce the application bill of materials and the required printed circuit board (PCB) area, resulting in solution optimized for compact and cost-effective GPS LNA functionality.

The SMA661AS is implemented in 70GHz SiGe BiCMOS technology. At the GPS frequency of 1.575GHz, power gain is 17dB and noise figure is 1.4dB with a current consumption of 8.5mA. The device features standby current consumption of 10nA. All these features are designed to remain steady over the operating environment temperature range of -40C to 85C.

Housed in an SOT666 plastic package (1.65-by-1.2-by-0.57mm), the SMA661AS is priced at 35 cents in quantities of one million units.

- Janine Love

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