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SiGe Semi power amps extend mobile phone battery life

Posted: 13 May 2003 ?? ?Print Version ?Bookmark and Share

Keywords:amplifier? cellphone amplifier? se5102? se5103? cdma2000 amplifier?

SiGe Semiconductor Inc. has introduced a pair of RangeCharger power amplifiers that feature a nominal quiescent current of 65mA, thereby prolonging the battery life of IS-95 and cdma2000 1x mobile handsets operating in the 824MHz to 849MHz band.

The SE5102 and SE5103 also offer a power output of 28dBm while operating in CDMA mode with a power added efficiency of 39 percent. They draw <2?A of current during standby and also feature a power down mode.

The SE5102 is a single-band, two-stage power amplifier based on a SiGe BiCMOS process that is claimed to improve power efficiency, linearity and integration. The SE5103 integrates the high-performance device into a fully matched, plug n' play module that contains all active circuitry including input and output impedance matching elements with a 50-ohm load.

Both also feature on-chip protection circuitry to ensure reliable performance under high voltage SWR conditions.

The SE5102 is available in a 16-pin, 3-by-3mm QFN package and is priced at 75 cents, while the SE5103 is supplied as a 4-by-4-by-1.5mm, 10-pin LGA device that costs $1.50.

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