SI5345B-B04707-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B04707-GM 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 350 MHz. The device utilizes fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance of 90 fs rms. It operates on a single 1.8 V core supply and includes in-circuit programmable non-volatile memory. The component supports LVDS, LVPECL, LVCMOS, CML, and HCSL output formats within a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis
• Provides ultra-low jitter attenuation with a bandwidth digitally programmable from 0.1 Hz to 4 kHz
• Supports hitless input clock switching between fractionally related sources
• 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 factory preprogrammed configuration against the application requirements before procurement. Confirm that the ordering suffix matches the desired tape and reel or tray packaging option. Ensure the serial interface protocol settings are compatible with the host controller design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when an output frequency range limited to 350 MHz is sufficient for the system design. Verify that the required number of differential and single-ended outputs aligns with the ten available channels. Ensure the external crystal frequency falls within the recommended 48 MHz to 54 MHz range for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates fourth-generation DSPLL technology. The 'B' designation indicates a maximum output frequency capability of 350 MHz, distinguishing it from higher-speed variants like the Si5345A. The 'D' suffix denotes the specific silicon revision supporting these functional characteristics.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other factory preprogrammed Si5345B devices such as SI5345B-Dxxxxx-GM. Generic family members like SI5345B-A-GM offer wider frequency ranges but require reprogramming. Ensure the replacement maintains the same package type and voltage specifications.