The APL2037 from ASB Inc. is a Frequency Synthesizer with Frequency 2.0375 GHz, Step Size 250 KHz, Reference Frequency 10 MHz, Output Power 2 to 4 dBm, Harmonics -25 to -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL2037 can be seen below.