The FemtoClock 3 family includes ultra-low jitter clock generators and jitter attenuators with 8 and 12 outputs, enabling high-performance, easy-to-use, and cost-effective clock tree designs for next-generation, high-speed interconnect systems.
Among the target applications for the new devices are telecom switches and routers, top-or-rack data centre switches, medical imaging, and broadcast audio & video.
The devices provide phase noise and jitter required to meet the needs of 112Gbps SerDes rates, as well as next generation 224Gbps SerDes designs using commonly available 48MHz to 73MHz crystals. Highly integrated, these devices can generate up to four frequency domains and offer integrated LDOs (Low Drop Out regulators) with superior PSRR, reducing board complexity and cost.
Key features of the FemtoClock 3 family include:
- Industry-leading 25fs-rms jitter exceeds next-generation 112Gbps and 224Gbps SerDes reference clock requirements
- Up to 4 frequency domains allow all system clocks to be generated from a single device
- Device variants with jitter attenuation, synchronization and clock generation capabilities and with 8 or 12 outputs
- Low power dissipation of 1.2W and operating a single 1.8V supply
- Integrated non-volatile memory allows for device customization in factory at no additional cost to customer
- Small 7 x 7mm 48-pin VFQFPN and 9 x 9mm 64-pin VFQFPN packages
- Compliant with ITU-T G.8262 and G.8262.1 for enhanced synchronous Ethernet
- Single chip with multiple operating modes simplifies overall clock tree
FemtoClock 3 supports multiple operating modes, including synchronisation, jitter attenuation, and clock generation.
Customers can combine the solution with the broader ClockMatrix, VersaClock, buffer and oscillator portfolio of timing solutions to address timing needs for high-performance wireline infrastructure and data centre designs.
FemtoClock 3 has been designed to function seamlessly in conjunction with the Renesas IC Toolbox (RICBox) application, allowing users to configure and program devices on the evaluation board.
Additionally, RICBox interfaces with the Renesas Lab on the Cloud platform, providing users with the capability to connect virtually to an actual laboratory setting.
