RF Micro Devices, Inc. has released RF5198 high-power, high-efficiency linear power amplifier (PA) module for WCDMA handset applications. Measuring 3 mm x 3 mm x 0.9 mm, the RF5198 is the smallest linear PA module to include an on-chip power detector, according to RFMD. By incorporating the power detector technology on-chip, the RF5198 significantly reduces design complexity and streamlines the handset design process.

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The RF5198 is a self-contained PA module with 50-Ohm input and output and is internally matched to obtain optimum power, efficiency and linearity. Manufactured on an advanced third-generation GaAs HBT process, the RF5198 is designed for use as the final RF amplifier in 3 V WCDMA handheld digital cellular equipment in the 1920 to 1980 MHz bands.

Other features include a digital control line to lower quiescent current for increased talk time in low power conditions. Assembled in an ultra-small, low profile 16-pin 3 mm x 3 mm QFN package, the RF5198 provides enhanced thermal dissipation compared to traditional laminate-based modules. Sampling now, the RF5198 will go into mass production in the second quarter. The PA module was showcased this week at 3GSM World Congress in Cannes, France.