The SM4A from MACOM is a RF Mixer with RF Frequency 10 MHz to 1 GHz, LO Frequency 10 MHz to 1 GHz, IF Frequency DC to 600 MHz, Conversion Loss 7 to 11.3 dB, LO Drive - Power 20 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for SM4A can be seen below.