The QPA9143 from Qorvo is a RF Amplifier with Frequency 2.3 to 3.8 GHz, Small Signal Gain 16 to 20 dB, Gain Flatness ±0.5 dB, Noise Figure 1.9 dB, Output Power 16 to 19.5 dBm. Tags: Surface Mount, Gain Block, Differential amplifier. More details for QPA9143 can be seen below.