The APL2020 from ASB Inc. is a Frequency Synthesizer with Frequency 1.97 to 2.07 GHz, Step Size 100 KHz, Reference Frequency 10 MHz, Output Power 3 to 7 dBm, Harmonics -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL2020 can be seen below.