The HMC680LP4 from Analog Devices is a RF Amplifier with Frequency 30 to 400 MHz, Gain 17 to 19 dB, Noise Figure 5 dB, Output Power 23 to 25 dBm, Output Power 0.199 to 0.316 W. Tags: Surface Mount, Digital Variable Gain Amplifier. More details for HMC680LP4 can be seen below.