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ST LNA with integrated matching networks

Posted: 31 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 optimised 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 -40°C to 85°C.

Housed in an SOT666 plastic package (1.65-by-1.2-by-0.57mm), the SMA661AS is priced at Rs.15.49 (35 cents) in quantities of 10 lakh (one million) units.

- Janine Love

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