The SFS3790S-LF from Z-COMM is a Frequency Synthesizer with Frequency 3.79 GHz, Reference Frequency 10 MHz, Output Power 0 to 6.dBm, Spurious -65 dBc, Supply Voltage 3 V. Tags: Surface Mount, PLL Frequency Synthesizer. More details for SFS3790S-LF can be seen below.