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Mouser Introduces Renesas’ High-Performance FemtoClock2 Synthesizer for Programmable Fiber Optic Modules

October 14, 2021 – Mouser Electronics, a distributor of Electronic components focused on introducing new products and offering massive inventory, is now stocking the Renesas Electronics FemtoClock2 high-performance clock synthesizer. This family of synthesizers provides ultra-low jitter performance of 64fs RMS and can be installed near switches, ASICs, FPGAs or PHYs that require multiple reference clocks with sub-100fs jitter performance. Additionally, these high-performance devices can be used as tunable OTN reference clocks required for OTU3/OTU4 mapping, and as reference clocks for programmable fiber modules.

The Renesas FemtoClock2 synthesizer family distributed by Mouser includes the RC22504A synthesizer and the RC32504A jitter attenuator and synthesizer. These devices can also be used as DCOs for frequency margining or OTN clocking applications. The PLL core of these devices contains a fractional feedback analog PLL (optionally a digital PLL for the RC32504A device) and operates from a crystal frequency between 25MHz and 80MHz.

The FemtoClock2 synthesizer has four differential outputs or eight LVCMOS outputs and supports any frequency from 10MHz up to 1GHz (up to 180MHz when using LVCMOS). With customer-definable internal one-time-programmable memory, these versatile synthesizers automatically configure after reset, using up to four different configurations.

The evaluation platform for the FemtoClock2 synthesizer is the RC22504A evaluation kit. Engineers can use the Renesas RICBox software to develop a configuration, which is then uploaded to the evaluation board via a USB connection. The evaluation kit is equipped with a Renesas low noise power regulator and a Renesas low noise fanout buffer.