The APL1750 from ASB Inc. is a Frequency Synthesizer with Frequency 1.7 to 1.8 GHz, Step Size 100 KHz, Reference Frequency 20 MHz, Output Power 0 to 4 dBm, Harmonics -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL1750 can be seen below.