Menlo Park, Calif. - The SFT100 series of synchronous frequency translators from SaRonix offers fully debugged and tested module solutions for OEM designers that require compact solutions for timing synchronization. The units provide pretested functionality for use in communication line cards, service termination cards, chained servers and other platforms that require low-jitter performance between 1.544 and 77.76 MHz.
The modules consist of a phase-locked loop and phase detection circuitry with the performance of a SaRonix fundamental-mode VCXO design, housed in a 14-pin surface-mount package that measures 20 x 19 x 4.8 mm.
During standard operation the device produces a low-jitter output frequency that is locked to a user-selectable reference input clock.
The module can operate in free-run mode with GR-1244-Core Sonet minimum clock holdover performance of plus/minus 20 ppm, to provide fault tolerance even when the lock between the signals or reference input is lost.
The series accepts standard LV-CMOS reference inputs of 8, 16, 32 and 64 kHz as well as 19.44 MHz by request, selectable through a two-wire pair to generate a very low-jitter LV-CMOS output of a higher frequency that is synchronized with the input. The output frequency can be specified from 1.544 MHz to 77.76 MHz with standard frequencies of 19.44, 44.736, 51.84 and 77.76 MHz. Period jitteris less than 5 picoseconds when oscillating in an unlocked, free-run mode.
The module also offers a buffered, tristate copy of the reference input signal that is jitter-attenuated internally. A 3.3-volt supply powers the device. Current consumption is roughly 120 milliamps.
The devices are available on tape and reel in increments of 250 pieces for automated pick-and-place equipment. Volume production is scheduled for this summer. Prices start below $40 each in lots of 1,000,. Delivery for samples ranges from stock to eight weeks.
Call (650) 470-7700