The HMC684LP4 from Analog Devices is a RF Mixer with RF Frequency 0.7 to 1.0 GHz, LO Frequency 600 MHz to 1.0 GHz, IF Frequency DC to 0.45 GHz, Conversion Loss 7 dB, P1dB 25 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC684LP4 can be seen below.