The CHA3689-99F from United Monolithic Semiconductors is a RF Amplifier with Frequency 12.5 to 30 GHz, Gain 26 dB, Gain Flatness ±2 to 2.5 dB, Noise Figure 1.8 to 2.5 dB, Output Power 13 to 14 dBm. Tags: Low Noise Amplifier. More details for CHA3689-99F can be seen below.