The FSW1857-100 from Synergy Microwave Corporation is a Frequency Synthesizer with Frequency 180 to 570 MHz, Step Size 1 MHz, Reference Frequency 10 MHz, Output Power 3 dBm, Supply Voltage 5 to 24 V. Tags: Surface Mount, PLL Frequency Synthesizer. More details for FSW1857-100 can be seen below.