SI5345D-B05100-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B05100-GMR is a low-jitter, 10-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input. The device supports differential inputs from 8 kHz to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and up to 250 MHz for LVCMOS. It features ultra-low jitter of 90 fs rms and meets ITU-T G.8262 SyncE requirements. Powered by 1.8 V and 3.3 V supplies, it operates within -40°C to +85°C in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis modes.
• Provides ultra-low jitter performance of 90 fs rms with digitally programmable loop bandwidth optimization.
• Supports hitless input clock switching between fractionally related clocks and glitchless on-the-fly frequency changes.
• Includes in-circuit programmable non-volatile memory for known power-up configuration and status monitoring flags.

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 datasheet to confirm factory preprogramming details. Confirm package availability and lead times through authorized distributors as supply status may vary. Ensure compatibility with ClockBuilder Pro software for configuration validation before deployment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ten independent output clocks are required with jitter attenuation capabilities. Verify that the maximum output frequency requirement does not exceed 350 MHz for differential outputs. Ensure the application supports the 64-QFN package footprint and thermal dissipation requirements specified in the datasheet.

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 'D' designation indicates support for output frequencies up to 350 MHz. It shares the same core architecture and pinout with Si5345A, B, and C variants, differing primarily in frequency specifications and synthesis modes.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GMR offers similar functionality but may have different factory programming or minor electrical variations. Si5345A-D-GMR provides extended frequency support up to 1028 MHz. Verify register compatibility and output driver configurations when substituting these family members.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for the Si5345D variant?

The Si5345D variant supports differential output frequencies up to 350 MHz and LVCMOS outputs up to 250 MHz.

Does the device support automatic input clock switching?

Yes, the device features an automatic input selection state machine based on input priority and validity, supporting both revertive and non-revertive switching modes.

How is the loop filter implemented in this device?

The loop filter is fully integrated on-chip, eliminating the need for external discrete components and reducing noise coupling risks associated with external filters.