SI5366-C-GQ

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5366-C-GQ is a jitter-attenuating precision clock multiplier utilizing third-generation DSPLL technology. It accepts four differential clock inputs ranging from 8 kHz to 707 MHz and generates five frequency-multiplied outputs up to 1050 MHz. The device operates on a single 1.8 V, 2.5 V, or 3.3 V supply within an industrial temperature range of -40 °C to +85 °C. It features selectable loop bandwidths between 60 Hz and 8.4 kHz, hitless input switching with less than 200 ps phase change, and supports SONET/SDH frame synchronization. Jitter generation is as low as 0.3 ps rms (12 kHz–20 MHz).

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates digital synthesizer and jitter attenuation in a single chip, eliminating external VCXO and loop filter components.
• Supports manual and automatic hitless switching between four input clocks with minimal phase transient propagation.
• Provides flexible output signal formats including LVPECL, LVDS, CML, and CMOS for diverse system compatibility.
• Includes alarm outputs for Loss of Signal (LOS), Loss of Lock (LOL), and Frequency Offset (FOS) monitoring.

Clock Generators, PLLs, Frequency Synthesizers Applications

• SONET OC-48/STM-16 and OC-192/STM-64 line cards
• GbE/10GbE and 1/2/4/8/10G Fibre Channel line cards
• ITU G.709 line cards
• Optical modules
• Synchronous Ethernet

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'C' against the manufacturer's ordering guide to confirm the exact speed grade and performance tier. Confirm the 'GQ' package designation matches the required 100-pin TQFP form factor. Ensure the selected variant meets the necessary electrical specifications for the target application environment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing high-speed communication systems requiring precise clock multiplication and jitter attenuation. Consider the available output voltage levels and signal formats to ensure compatibility with downstream receivers. Evaluate the loop bandwidth requirements based on the input clock source characteristics and jitter tolerance specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The Si5366 belongs to Skyworks Solutions' Si536x family of jitter attenuating clocks designed for high-speed networking and data center infrastructure. This series addresses timing requirements for 400G/800G networks and coherent optical technologies using ultra-low jitter DSPLL architecture.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement matrix for verified alternatives.