The CHA4250-QDG from United Monolithic Semiconductors is a RF Amplifier with Frequency 5.5 to 11 GHz, Gain 26 dB, Noise Figure 7 dB, Output Power 23.5 to 25 dBm, Output Power 0.22 to 0.32 W. Tags: Surface Mount, Power Amplifier. More details for CHA4250-QDG can be seen below.