Frequency synthesiser offers ultra low phase noise

May 05, 2014 // By Jean-Pierre Joosting
An RoHS, L-band compliant fixed frequency synthesiser, model SFS1575D-LF, is a single frequency synthesiser that operates at 1575.42 MHz with a 10 MHz reference and features a typical phase noise of -102 dBc/Hz at 10 kHz offset.

SFS1575D-LF is designed to deliver a typical output power of 5 dBm with a VCO voltage supply of 5 Vdc while drawing 20 mA (typical) and a phase locked loop voltage of 3 Vdc while drawing 14 mA (typical). This fixed frequency synthesiser features a typical 2nd harmonic suppression of -18 dBc and spurious suppression of -70 dBc.

The fixed frequency synthesiser is housed in Z-Comm's standard PLL-V12N package measuring 0.6 x 0.6 x 0.13 in. The SFS1575D-LF is suitable for automated surface mount assembly and is available in tape and reel packaging.

SFS11800-LF can be used for GPS clock systems that require extremely low phase noise performance while operating over the industrial temperature range of -40 to 85°C.