SI5345B-B06003-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345B-B06003-GM is a factory preprogrammed, low-jitter clock synthesizer and jitter attenuator belonging to the Si5345 family. It features four inputs and ten outputs housed in a 64-QFN package. The device supports integer and fractional frequency synthesis with output frequencies up to 350 MHz. It utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. Key electrical specifications include a maximum input frequency of 750 MHz (differential) or 250 MHz (LVCMOS), a core voltage of 1.8 V ±5%, and an auxiliary supply of 3.3 V ±5%. Operating temperatures range from -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for any-frequency generation and jitter attenuation
• Features in-circuit programmable non-volatile memory for known power-up configuration
• Supports free-run, synchronous, and holdover modes with automatic or manual input 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 factory preprogrammed configuration associated with the B06003 suffix against project requirements before procurement. Confirm that the QFN-64 package dimensions match the PCB land pattern. Ensure the serial interface settings (I2C/SPI) are compatible with the host controller. Check for RoHS compliance status if required by local regulations.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when ten differential or single-ended outputs are required with frequencies capped at 350 MHz. The Si5345B variant is suitable for applications prioritizing jitter attenuation over high-frequency generation beyond 350 MHz. Consider the Si5345A if frequencies up to 1028 MHz are necessary. Verify that the 1.8 V core and 3.3 V I/O supplies align with the system power architecture.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component is part of the Si5345/44/42 Rev D family, which integrates DSPLL and MultiSynth technologies. The Si5345 model specifically provides four inputs and ten outputs in a 9x9 mm 64-QFN package. Other family members include the Si5344 (4 outputs) and Si5342 (2 outputs), both in 44-QFN packages. The series supports various output formats including LVDS, LVPECL, LVCMOS, CML, and HCSL.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include the Si5345A-D-GM for higher frequency support or the generic Si5345B-D-GM for reprogramming. Factory preprogrammed substitutes require matching the exact numerical sequence in the ordering part number to ensure identical frequency configurations.