SI5345B-B03470-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345B-B03470-GM is a low-jitter, 10-output clock synthesizer and jitter cleaner. It supports any frequency generation up to 350 MHz with differential outputs and LVCMOS inputs. The device operates on a supply voltage between 1.71 V and 3.47 V. It features a QFN-64 package and functions within a temperature range of -40°C to +85°C. The maximum input frequency reaches 750 MHz, while the operating supply current is 125 mA with power dissipation at 880 mW.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using DSPLL and MultiSynth technologies
• 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
• Includes in-circuit programmable non-volatile memory for known power-up configuration

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 official documentation to confirm factory preprogramming details. Confirm availability status through authorized distributors as stock levels fluctuate. Ensure the component meets RoHS compliance requirements for your manufacturing process. Validate that the QFN-64 package dimensions match your PCB land pattern specifications before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ten independent output clocks are required with frequencies up to 350 MHz. The Si5345B variant specifically targets applications needing lower maximum output frequencies compared to the Si5345A or C series. Ensure the design accommodates the 64-pin QFN package and provides adequate thermal management for the specified power dissipation. Verify compatibility with the required input signal formats and voltage levels.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of jitter attenuating clock multipliers. It utilizes fourth-generation DSPLL and MultiSynth technologies to provide high-performance clock generation. The device is designed for applications requiring ultra-low jitter and flexible frequency synthesis capabilities across multiple output channels.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GM serves as a generic base replacement option within the same family. Other variants like Si5345A-D-GM offer higher frequency ranges but may require different configuration settings. Always verify pinout compatibility and electrical specifications before substituting.