The LTC5556 from Analog Devices is a RF Mixer with RF Frequency 1.5 to 7 GHz, LO Frequency 0.5 to 8 GHz, IF Frequency 1 to 900 MHz, Conversion Gain -6.4 to 9.1 dB, Noise Figure 12.6 to 24.1 dB. Tags: Surface Mount, Down-Conversion Mixer, Active Mixer. More details for LTC5556 can be seen below.