The HMC219AMS8 from Analog Devices is a RF Mixer with RF Frequency 4.5 to 9.0 GHz, LO Frequency 4.5 to 9.0 GHz, IF Frequency DC to 2.5 GHz, Conversion Loss 8.5 dB, LO Drive - Power 13 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC219AMS8 can be seen below.