SI5345B-B06151-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B06151-GM is a factory preprogrammed clock multiplier and jitter attenuator from the Si5345 Rev D family. It features four inputs and ten outputs, supporting integer and fractional synthesis with output frequencies up to 350 MHz. The device utilizes fourth-generation DSPLL technology to achieve ultra-low jitter of 90 fs rms. It operates on a single 1.8 V core voltage and includes an integrated loop filter. Configuration is managed via I2C or SPI serial interfaces, with in-circuit programmable non-volatile memory ensuring known power-up states.

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 performance of 90 fs rms through fourth-generation DSPLL technology
• Supports hitless input clock switching between fractionally related sources
• Includes in-circuit programmable non-volatile memory for persistent configuration storage

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 associated with the B06151 suffix against project requirements. Confirm package availability and lead times directly with Skyworks Solutions Inc. or authorized distributors. Ensure compatibility with ClockBuilder Pro software settings if field reprogramming is required.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when low jitter attenuation is critical for high-speed networking applications. The Si5345B variant limits output frequencies to 350 MHz; choose higher variants like Si5345A if frequencies above 350 MHz are needed. Verify that the 10-output count meets system design needs compared to the 4-output Si5344 or 2-output Si5342 options.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series, which combines MultiSynth and DSPLL technologies. The 'B' designation indicates a maximum output frequency of 350 MHz, distinguishing it from the 'A' and 'C' variants that support up to 1028 MHz. The 'GM' suffix denotes a Pb-free, RoHS-6 compliant QFN package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include SI5345A-Dxxxxx-GM for higher frequency support or SI5345C-Dxxxxx-GM for integer-only synthesis. Cross-family replacement with SI5344 or SI5342 requires reducing output counts.