The HMC689LP4 from Analog Devices is a RF Mixer with RF Frequency 2.0 to 2.7 GHz, LO Frequency 2 to 3 GHz, IF Frequency DC to 0.8 GHz, Conversion Loss 7.5 dB, P1dB 23 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC689LP4 can be seen below.