The APL1057.5 from ASB Inc. is a Frequency Synthesizer with Frequency 1.005 to 1.11 GHz, Step Size 10 KHz, Output Power 1 to 6 dBm, Harmonics -25 to -20 dBc, Spurious -68 to -62 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL1057.5 can be seen below.