The QPA9908 from Qorvo is a high efficiency Power Amplifier that operates from 925 to 960 MHz. It delivers a P3dB of 4 W (35.5 dBm) while maintaining 36% PAE at 28 dBm average operation power. It has a typical gain of 33 dB. This high-efficiency power amplifier is fabricated using InGaP/GaAs HBT technology and is designed for small-cell wireless infrastructure systems. It provides an excellent digital pre-distortion (DPD) linearized ACPR of -48 dBc for signal bandwidths up to 40 MHz. The amplifier requires a DC supply from 4.75 to 5.25 V and consumes 350 mA of current.
The QPA9908 is available in a 16-pad SMT package that measures 5 x 5 mm with on chip ESD protection and is ideal for 3GPP Band 8 small cells, M-MIMO, repeaters / DAS, mobile infrastructure, and general-purpose wireless applications. It is targeted for use as a power amplifier with DPD linearization technique in wireless infrastructure where high linearity, medium power, and high efficiency are required. The amplifier is ideal for transceiver line cards in current and next generation multi-carrier 3G/4G/5G base stations.
