LNA for GPS applications

17 September 2008 Telecoms, Datacoms, Wireless, IoT

Infineon has developed a high-sensitivity LNA (low noise amplifier) with excellent noise characteristics optimised for GPS applications. The new BGA715L7 fulfils design requirements for high sensitivity and immunity to interference of cellular signals while contributing to increased battery lifetime with a low power consumption of only 5,94 mW and the capability to operate at 1,8 V supply voltage.

Based on Infineon’s cost-effective SiGe:C technology, the device offers a noise figure of only 0,6 dB and low current consumption of only 3 mA. The power supply, ranging from 1,5 V to 3,6 V, and digital control ranging from 1,0 V to 3,6 V assure compatibility with all GPS chipsets available in the market and enable low voltage designs for energy saving.

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 IC needs only three external passive components, therefore supporting compact designs.

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