Date: 19/12/2008

Synchronous clock multiplier IC supporting 10G line encoding rates

Silicon Laboratories has introduced the expansion of its Any-Rate Precision Clock family with the Si5315, a jitter-attenuating clock multiplier IC that meets or exceeds the performance, integration, frequency and jitter requirements for the 1G and 10G Synchronous Ethernet (SyncE) market. The Si5315 is the industry's only SyncE clock multiplier IC to support 10G line encoding rates (161.13 MHz) in addition to SONET/SDH and Ethernet frequencies. The device does not require external phase-locked loop (PLL) components. The applications targeted are carrier Ethernet switch routers (CESR), wireless backhaul, 3G/4G base stations, multi-service access platforms, passive optical networking, IP DSLAM and T1/E1 infrastructure.

The Si5315 provides the lowest jitter of less than 0.6 ps rms phase jitter, meeting the jitter requirements specified by ITU-T G.8262 and providing significant margin to Gigabit Ethernet (GbE) and 10 GbE PHY jitter requirements. The Si5315 generates more than 200 of the most popular frequency translations required in SyncE line card applications.

Pricing and Availability

The Si5315 is packaged in 36-lead, 6x6 mm QFN package with samples available in January and full production in Q1 2009. The Si5315A for 10G applications is priced at $17.72 in 1,000 piece quantities. The Si5315B for 1G applications is priced at $12.50 in 1,000 piece quantities.