SI5347B-D-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5347B-D-GMR is a clock synthesizer and jitter cleaner featuring four independent Dual-Source Phase-Locked Loops (DSPLLs) within a 64-pin QFN package. It supports any-frequency conversion with output frequencies up to 350 MHz and input frequencies up to 750 MHz. The device provides eight outputs compatible with LVCMOS, LVDS, LVPECL, CML, and HCSL standards. Operating on a single 1.8 V core supply and 3.3 V I/O supply, it achieves ultra-low jitter performance of 95 fs rms. The component operates within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for flexible timing paths
• Supports hitless and glitchless input clock switching
• Includes automatic holdover and free-run modes
• Features programmable jitter attenuation bandwidth

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN Muxponders and Transponders
• 10/40/100G network line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet
• Carrier Ethernet switches
• Broadcast video systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm availability and configuration details. Factory pre-programmed variants require unique part numbers assigned via ClockBuilder Pro software. Confirm RoHS compliance and moisture sensitivity levels prior to procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when eight low-jitter outputs are required from multiple independent inputs. Ensure the application frequency requirements fall within the 350 MHz output limit. Verify that the system design accommodates the 64-QFN package dimensions and thermal dissipation characteristics specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5347 family of high-performance jitter attenuators. It shares architectural similarities with the Si5346 but offers increased integration with four DSPLLs and eight outputs compared to the dual-PLL, four-output Si5346 variant. Both devices utilize fourth-generation DSPLL technology.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5347A-D-GMR serves as a direct functional replacement if higher output frequencies up to 720 MHz are acceptable. The Si5346 series offers a smaller footprint but reduced output count. Verify pin compatibility and register settings when substituting.