The HMC685LP4 from Analog Devices is a RF Mixer with RF Frequency 1.7 to 2.2 GHz, LO Frequency 1.5 to 2.2 GHz, IF Frequency DC to 0.50 GHz, Conversion Loss 8 dB, P1dB 23 to 25 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC685LP4 can be seen below.