SI5345B-D05672-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-D05672-GM is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5345 family. It features four inputs and ten outputs, supporting output frequencies up to 350 MHz with integer and fractional synthesis modes. The device utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. It operates on a 1.8 V core voltage and 3.3 V analog supply within a temperature range of -40°C to +85°C. The component is housed in a 64-QFN package measuring 9x9 mm.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis.
• Integrates fourth-generation DSPLL and MultiSynth technologies for high-performance jitter attenuation.
• Supports free-run, synchronous, and holdover modes with automatic or manual input clock switching.
• Features fully integrated loop filter and digitally programmable jitter attenuation bandwidth.

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 factory preprogrammed configuration associated with the numerical suffix D05672 against the target design requirements. Confirm that the ordering part number matches the required output frequency plan and synthesis mode. Ensure compatibility with the I2C or SPI serial interface settings defined in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency limit of 350 MHz is sufficient, as higher frequency variants exist in the Si5345A series. Verify that the 64-QFN package dimensions fit the PCB layout constraints. Ensure the application supports the required 1.8 V and 3.3 V power supplies and utilizes the ClockBuilder Pro software for initial configuration validation.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which includes variants with different output counts and frequency ranges. The 'B' designation indicates a maximum output frequency of 350 MHz, distinguishing it from the 'A' and 'C' variants that support frequencies up to 1028 MHz. The 'D' suffix denotes the Rev D hardware revision.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345B-D-GM serves as the generic base part number for this family member. Other specific preprogrammed variants within the same frequency range include SI5345B-Dxxxxx-GM. For higher frequency requirements, consider the SI5345A-D series.