Silicon clocks beat traditional oscillators, says IDT

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According to IDT, the high-reliability silicon clocks are cheaper than traditional canned high-frequency oscillators, and are often smaller.

FemtoClock synthesisers are programmable clock signal sources. They provide high-speed, low-jitter reference clock signals to communication interfaces and higher-layer data processing devices. Aimed at communication interfaces such as Gigabit-Ethernet, sRIO and SDH/SONET, the FemtoClock synthesisers combine the low-jitter of crystal-based oscillators with the flexibility of silicon.

IDT’s FemtoClock devices use a proprietary phase locked loop (PLL) with sub-picosecond jitter, under 1ps rms, integrated over 12kHz to 20MHz. The ICS84-series of FemtoClocks supports frequencies up to 700MHz, with individual devices optimised for common clock frequencies used in the telecommunications industry.

The portfolio covers clock functions such frequency synthesisers, multiple-frequency generators, jitter attenuator devices, functions with integrated fanout, integrated clock input detection and PLL lock indication and clock switches.