The PCA1550A-LF from Z-COMM is a Frequency Synthesizer with Frequency 1.32 to 1.34 GHz, Step Size 1000 KHz, Reference Frequency 10 MHz, Output Power -1 to 4 dBm, Spurious -70 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for PCA1550A-LF can be seen below.