The HMC622LP4 from Analog Devices is a RF Mixer with RF Frequency 1.8 to 3.9 GHz, LO Frequency 1.8 to 3.9 GHz, IF Frequency 0.2 to 0.55 GHz, Conversion Gain 9 dB, LO Drive - Power 3 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC622LP4 can be seen below.