SI5345A-B05766-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345A-B05766-GM is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5345 family. It features four inputs and ten outputs, supporting integer and fractional frequency synthesis with output frequencies ranging from 0.001 MHz to 1028 MHz. The device utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. It operates on a core voltage of 1.8 V ±5% and an analog supply of 3.3 V ±5%, housed in a 64-QFN 9×9 mm package. The operating temperature range spans from -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes.
• Features ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports hitless input clock switching, free-run, synchronous, and holdover modes of operation.
• Includes in-circuit programmable non-volatile memory (NVM) 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 part number against the manufacturer's current documentation to ensure compatibility with the required preprogrammed configuration. Confirm that the factory preprogrammed state matches the design requirements, as custom configurations are assigned unique numerical sequences by Skyworks. Check for any recent product change notices or end-of-life announcements related to this specific variant before finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the SI5345A variant when output frequencies up to 1028 MHz are required with both integer and fractional synthesis capabilities. Ensure the application supports the 64-QFN 9x9 mm package dimensions and thermal characteristics. Verify that the system design accommodates the 1.8 V core and 3.3 V analog supply voltages. Consider the availability of ClockBuilder Pro software for configuration if custom programming is needed instead of factory preprogrammed options.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5345A-B05766-GM belongs to the Si5345 family of 10-channel jitter attenuators. The 'A' suffix indicates support for output frequencies up to 1028 MHz with integer and fractional synthesis. The 'B05766' represents a unique factory preprogrammed configuration sequence. This component is part of the Rev D datasheet series, which includes the Si5344 and Si5342 variants with fewer outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345A-D-GM is a generic equivalent part number within the same family offering identical electrical specifications and functionality without a specific factory preprogrammed configuration.