SI5345D-B04994-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345D-B04994-GMR is a 10-output clock synthesizer and jitter cleaner utilizing fourth-generation DSPLL and MultiSynth technologies. It supports any-frequency generation with a maximum output frequency of 350 MHz and a maximum input frequency of 750 MHz. The device operates on a single 1.8 V core supply (VDD) and a 3.3 V analog supply (VDDA), consuming approximately 125 mA. It features programmable output levels including LVDS, LVPECL, LVCMOS, CML, and HCSL within a 64-pin QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis
• Provides ultra-low jitter performance with digitally programmable loop bandwidth for optimization
• Supports hitless input clock switching between fractionally related sources
• Includes in-circuit programmable non-volatile memory for known power-up configurations

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm factory pre-programmed configuration details. Confirm package availability and lead times directly with authorized distributors or the manufacturer, as stock levels fluctuate. Ensure the serial interface requirements match your system design before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency range up to 350 MHz is sufficient. For applications requiring frequencies up to 1028 MHz, consider the Si5345A variant. Verify that the required number of inputs and outputs aligns with the Si5345's 4-input, 10-output architecture. Use ClockBuilder Pro software to determine the optimal loop bandwidth and crystal specifications for your specific jitter attenuation needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family of jitter attenuators. It shares the same physical footprint and basic functionality with the Si5345A, Si5345B, and Si5345C variants, differentiated primarily by their maximum supported output frequency ranges and synthesis modes (integer vs. fractional).

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5345D-D-GM is the standard tray-packaged equivalent. The Si5345A-D-GMR offers higher frequency support up to 1028 MHz. Verify pin compatibility and register settings when substituting with other Si5345 family members.