RF Micro Devices has released the RF720x family of WCDMA/HSPA+ power amplifiers (PAs), comprised of four PAs designed for 3G multimode devices implementing mode-specific, band-specific front end architectures. The RF7200 (band 1), RF7206 (band 2), RF7203 (band 3, 4, 9 or 10) and the RF7211 (band 11) are designed for single-band operation, while the RF7201 (band 1/8), RF7202 (band 2/5) and the RF7205 (band 1/5) feature two band-specific PAs integrated in a single module package. Each band of amplification in the RF720x product family is addressed with a band-specific high-efficiency, linear power amplifier designed to lower current consumption as output power levels decrease. The improvement in low-power efficiency is enabled through the use of three digital power modes that adjust bias current and optimise the PA for the desired output power range while maintaining linearity.
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