SI5345B-B00010-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345B-B00010-GM is a low-jitter, 10-output clock synthesizer and jitter attenuator. It supports any-frequency generation up to 350 MHz with ultra-low jitter performance of 90 fs rms. The device features four inputs (differential or LVCMOS) and ten configurable outputs supporting CML, HCSL, LVCMOS, LVDS, and LVPECL formats. Operating voltage ranges from 1.71 V to 3.47 V, with a maximum input frequency of 750 MHz. It utilizes DSPLL and MultiSynth technologies for flexible clock multiplication and attenuation.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for any-frequency clock generation and jitter attenuation.
• Features in-circuit programmable non-volatile memory (NVM) for known power-up configuration.
• Supports free-run, synchronous, and holdover modes with automatic or manual input clock switching.
• Includes fully integrated on-chip loop filter to eliminate discrete noise coupling risks.

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 pre-programmed configurations. Check for availability status as distribution channels may list limited stock or end-of-life conditions. Ensure compatibility with ClockBuilder Pro software for final validation of the serial interface settings before deployment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ten output clocks are required with frequencies up to 350 MHz. Verify that the differential input range up to 750 MHz meets system requirements. Confirm that the QFN-64 package dimensions fit the PCB layout constraints. Ensure the application benefits from the integrated loop filter and NVM capabilities for simplified design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family, which includes variants with different output counts and frequency ranges. The 'B' designation typically indicates a specific frequency limit compared to other family members. It is part of Skyworks' MultiSynth series designed for high-performance timing applications requiring precise jitter management.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes within the same family include SI5345A-D-GM or SI5345C-D-GM if higher frequency support is needed. Verify pinout compatibility and register mapping similarities. Consult the official replacement guide to ensure functional equivalence regarding jitter performance and output configurations.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the SI5345B variant?

The SI5345B variant supports output frequencies up to 350 MHz.

Does the device support glitchless input switching?

Yes, the device supports glitchless input switching between input clock frequencies that are up to ±500 ppm apart.

How is the loop filter implemented in this component?

The loop filter is fully integrated on-chip, which eliminates the risk of noise coupling associated with discrete external solutions.