The LTC5541 from Analog Devices is a RF Mixer with RF Frequency 1300 to 2300 MHz, Conversion Gain 8.9 dB, Noise Figure 9.6 dB, IP3 26.4 dBm, Supply Voltage 3.3 V. Tags: Surface Mount, Down-Conversion Mixer. More details for LTC5541 can be seen below.