The APL0990.1 from ASB Inc. is a Frequency Synthesizer with Frequency 980.1 MHz to 1 GHz, Step Size 100 KHz, Reference Frequency 10 MHz, Output Power 2 to 7 dBm, Harmonics -25 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL0990.1 can be seen below.