The CHA3511-99F from United Monolithic Semiconductors is a RF Amplifier with Frequency 6 to 18 GHz, Gain 35 to 39 dB, Small Signal Gain 15 to 16 dB pk-pk, Noise Figure 6 to 12 dB, Output Power 18 to 22 dBm. Tags: Surface Mount, Digital Variable Gain Amplifier. More details for CHA3511-99F can be seen below.