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LNA delivers high sensitivity, high immunity for GPS apps

Neubiberg, Germany — Announced at the Expo Comm Wireless Japan show, Infineon Technologies AG has introduced a high-sensitivity low noise amplifier (LNA) with a best-in-class noise figure for GPS applications. The BGA715L7 meets mobile phone design requirements for high-sensitivity and immunity to interference of cellular signals while contributing to increased battery lifetime with a very low power consumption of only 5.94 mW and 1.8-V supply voltage.

Based on Infineon's SiGe:C technology, the BGA715L7 offers a noise figure of 0.6 dB, which is a 0.2 dB improvement over the next SiGe competitor, according to Infineon. In addition, the low current consumption of only 3 mA is about 20 percent lower compared to alternative devices, which results in longer battery lifetime.

The broad power supply range, from 1.5 V to 3.6 V, and digital control ranging from 1.0 V to 3.6 V ensure compatibility with all GPS chipsets available in the market and enable low-voltage designs for energy savings. The BGA715L7 shows a high gain of 20 dB and high linearity (input compression point of -12 dBm at 2.8 V). An internal smart biasing circuit ensures stable operation over temperature and supply voltage variations.

On-chip ESD protection is provided up to 1 kV HBM, which simplifies system ESD protection and makes the device very robust against ESD events during the assembly process. The BGA715L7 needs only three external passive components.

Pricing: Starts at USD 0.5 each in quantities of 10,000. The BGA715L7 is shipped in a leadless TSLP7-1 package (2.0 x 1.3 x 0.4 mm), which is pin-to-pin compatible with the predecessor product BGA615L7.
Availability: Samples are available now, with volume production scheduled to begin in September 2008. Evaluation kits are available.

Product information: LNAs and BGA715L7

Infineon Technologies , www.infineon.com

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