SI5345A-B06746-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345A-B06746-GMR is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5345 family. It features four inputs and ten outputs, supporting any-frequency generation up to 1028 MHz using integer and fractional synthesis modes. The device utilizes fourth-generation DSPLL and MultiSynth technologies to achieve ultra-low jitter performance of 90 fs rms. It operates within a temperature range of -40°C to +85°C and 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
• Ultra-low jitter of 90 fs rms
• Programmable jitter attenuation bandwidth: 0.1 Hz to 4 kHz
• Meets G.8262 EEC Option 1, 2 (SyncE)
• Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL with programmable signal amplitude

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 part number against the manufacturer's current documentation to ensure compatibility with your design requirements. Confirm that the factory preprogrammed configuration matches your intended frequency plan, as custom configurations are assigned by Skyworks. Check for any recent process change notifications or errata related to the Si5345 Rev D series before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when high-performance jitter attenuation is required for applications supporting frequencies up to 1028 MHz. Ensure the application supports the 64-QFN package size and operates within the specified temperature range. Verify that the serial interface and non-volatile memory programming capabilities align with the system's configuration needs. Consider the power supply requirements for VDD and VDDA pins during board design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family of clock multipliers, which includes variants like the Si5344 and Si5342 with fewer outputs. The 'A' suffix indicates support for frequencies up to 1028 MHz with integer and fractional synthesis. The 'B06746' suffix denotes a specific factory preprogrammed configuration. The 'GMR' suffix typically indicates tape and reel packaging, though verification with official datasheets is recommended.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5345A-D-GM variants with different preprogrammed configurations. For pin-compatible alternatives with similar functionality, consider the Si5344 or Si5342 families if fewer outputs are acceptable. Verify that any substitute part supports the same frequency range and jitter performance requirements.