Broadband low noise amplifier

9 July 2008 Telecoms, Datacoms, Wireless, IoT

Infineon has announced the availability of the company's new low noise amplifier (LNA), one of the industry's smallest broadband LNAs for portable and mobile TV applications. The new BGA728L7 supports 1,8 V, 2,8 V and 3,3 V operations. It is optimised for a wide frequency range covering VHFIII, UHF and L bands, and offers both high-gain and low-gain modes. In high-gain mode, it consumes about 5 mA current. The noise figure is as low as 1,4 dB and the gain is about 16 dB with minimum variation over the complete working frequency range. In low-gain mode, input IP3 (third order intercept point) is +16 dBm at a current of only 0,5 mA. The on-chip 1 kV HBM ESD protection simplifies the system ESD protection effort and makes it highly robust against ESD events. The BGA728L7 integrates not only a high performance SiGe bipolar transistor but also components such as active-biasing, feedback and input/output matching circuits.

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