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High-gain GPS LNA with variable current and shutdown functions

Avago Technologies has announced the new addition to its family of LNAs (low noise amplifiers) with a new high-gain LNA with variable current and shutdown functions for use in GPS, unlicensed ISM (Industrial, Scientific and Medical) bands and WiMax applications. The company’s compact MGA-231T6 offers a low noise figure combined with high linearity to help significantly improve the sensitivity of GPS receivers. This LNA targets designers of mobile handsets with GPS functions, recreational and navigation GPS receivers and antennas. Housed in a compact 2.0×1.3×0.4mm package, the LNA requires four to five external matching components to help reduce the amount of printed circuit board space and the number of components needed in the design. The LNA uses the company’s proprietary GaAs Enhancement-mode pHEMT process to achieve high gain with a low noise figure. The noise figure distribution is tightly controlled and a CMOS-compatible shutdown pin is included for turning the LNA on or off or for current adjustment. The low noise figure and high gain, coupled with low current consumption make the LNA suitable for use in critical low-power GPS applications or during low battery situations.