The APLT1950 from ASB Inc. is a Frequency Synthesizer with Frequency 1.9 to 2 GHz, Step Size 200 KHz, Reference Frequency 10 MHz, Output Power 1 to 7 dBm, Harmonics -25 to -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APLT1950 can be seen below.