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Avago rolls GPS LNA with integrated FBAR filters

Posted: 02 Dec 2008 ?? ?Print Version ?Bookmark and Share

Keywords:GPS? FBAR filter? RF front-end module?

Avago Technologies has unveiled ALM-1712, a GPS LNA with integrated filters suitable for simultaneous GPS (S-GPS) and small form factor designs. The ALM-1712 integrates a GPS LNA and two film bulk acoustic resonator (FBAR) filters, thus enabling a complete, compact GPS RF front-end module that simplifies the design of various GPS applications.

S-GPS and other location-based GPS services require a high level of receiver sensitivity. The ALM-1712 is a complete GPS RF front-end that delivers low noise figures, high linearity and out-of-band rejection performance. By integrating a GPS LNA with pre and post high-rejection FBAR filters, it simplifies the RF design process, reduces component count and provides RF performance levels critical in GPS applications.

Key features
Housed in a 4.5mm x 2.2mm x 1.0mm MCOB package, Avago's new GPS LNA reduces PCB space by 50 percent compared with a discreet-only solution. The integration of FBAR filtering enables it to reach more than 85dBc of cell/PCS-band rejection levels. Additionally, the ALM-1712 leverages Avago's 0.5?m GaAs enhancement-mode pHEMT process to deliver a 1.7dB noise figure, 13.5dB gain and +5dBm IIP3 (input third order intercept point) at typical operating condition of 2.7V and 8mA. At 1.8V, the module can still achieve low noise figure and high linearity, which makes it suitable for low-power GPS applications.

The ALM-1712 is designed for the 1.575GHz frequency band, targeting handset GPS, recreational and in-vehicle GPS receiver, and GPS antenna applications.

Pricing begins at $1.81 in the 10,000-piece quantity range. For more information about Avago Technologies' wireless products, visit

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