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Skyworks Solutions Inc. Si537x 4-PLL Jitter Attenuating Clock ICs

Skyworks Solutions Inc. Si537x 4-PLL Jitter Attenuating Clocks are the first single-chip timing ICs to integrate four independent, high-performance phase-locked loops (PLLs), providing twice the PLL integration and 40 percent lower jitter than competing solutions. Skyworks Si537x clock ICs with DSPLL® technology address the complex timing requirements of high-speed optical transport network (OTN) applications. The Si5374 has eight input clocks and eight output clocks, while the Si5375 offers four input clocks and four output clocks for applications requiring fewer clocks. With its quad-DSPLL configuration, a single Si5374 clock can generate different frequencies simultaneously, enabling the design to support SONET/SDH, 1/10/100G Ethernet, 1/2/4/8/10G Fibre Channel, 3G/HD SDI video, and other protocols simultaneously in the same device.

Skyworks Si5376 clock ICs provide a smooth upgrade path for existing customers migrating from Skyworks Si5319 / Si5326 clocks to a more integrated jitter-cleaning clock solution designed to minimize BOM cost and complexity. The Si537x clocks effectively replace four timing devices with a single IC in high-port-count 10G/40G/100G OTN line cards.

Features

  • Highly-integrated, 4 PLL clock multiplier/jitter attenuator
  • Four independent DSPLLs support any-frequency synthesis and jitter
  • attenuation
  • Each DSPLL can generate any frequency from 2 kHz to 808 MHz from a 2kHz to 710MHz input
  • Ultra-low jitter clock outputs: 410fs RMS (12kHz - 20MHz), 440fs RMS (50kHz - 80MHz)
  • Meets ITU-T G.8251 and Telcordia GR-253-CORE OC-192 jitter specifications
  • Supports all ITU G.709 and any custom FEC ratios (239/237, 255/238, 255/237, 255/236, 253/226)
  • I²C programmable
  • Single 1.8V ±5% or 2.5V ±10% operation with high PSRR on-chip voltage regulator
  • 10mm x 10mm PBGA

Applications

  • High-density, any-port, any-protocol, any-frequency line cards
  • ITU-T G.709 OTN custom FEC
  • 10/40/100G
  • OC-48/192, STM-16/64
  • 1/2/4/8/10G Fibre Channel
  • GbE/10GbE Synchronous Ethernet
  • Carrier Ethernet, multi-service switches, and routers
  • MSPP, ROADM, P-OTS, muxponders

Development Tools

Published: 2011-05-09 | Updated: 2022-03-11