Infineon Technologies AG has released its new low noise amplifier (LNA), one of the industry’s smallest broadband LNAs for portable and mobile TV applications, at the IEEE MTT-S International Microwave Symposium 2008. The new BGA728L7 is one of the first mobile TV LNAs worldwide to support 1.8V, 2.8V and 3.3V operations and is optimized for a wide frequency range covering VHFIII, UHF and L-bands, one of only a few mobile TV LNAs offering both high-gain and low-gain modes. At high-gain mode, the BGA728L7 helps to improve reception sensitivity for weak signals through its noise figure of 1.4dB combined with 16dB gain. For a strong input signal, the BGA728L7 can be switched to a low-gain mode to offer higher linearity with low current consumption of only 0.5mA.
The Infineon BGA728L7 supports various standards such as DVB-T, DVB-H, ISDB-T, MediaFLO and T-DMB as well as the emerging Chinese standards including CMMB, TMMB or DMB-TH. Its high gain and excellent noise figure enhance system sensitivity. Through switching to low-gain mode with an input 1dB compression point of 3.5dBm, the LNA can handle a higher input power level, increasing the system’s dynamic range by up to 20dB. The fast switching time of 3.5µs also allows it to support time-slicing-based mobile TV systems.
Samples of the BGA728L7 and evaluation kits to support customer designs are available now. Volume production will begin in July.
For more information, visit www.infineon.com/rfmmic.
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