SI5345A-B02956-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345A-B02956-GM is a factory preprogrammed, 10-output jitter attenuator and clock multiplier from the Si5345 family. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any combination of output frequencies from any input frequency. The device supports integer and fractional synthesis with an output frequency range up to 1028 MHz for differential outputs. Key electrical parameters include a core voltage (VDD) of 1.8 V ±5% and an analog supply (VDDA) of 3.3 V ±5%. It operates within a temperature range of –40 to +85 °C and is housed in a 64-QFN 9×9 mm package.

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 frequency plan. As this is a custom factory preprogrammed device, standard replacement parts may not function identically without reprogramming. Confirm that the B02956 suffix corresponds to the intended configuration before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the SI5345A variant when output frequencies exceeding 350 MHz are required, as it supports ranges up to 1028 MHz. Ensure the design accommodates the 64-QFN package dimensions and thermal requirements. Verify that the application benefits from the integrated loop filter and NVM features to simplify board layout and reduce component count compared to discrete solutions.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of low-jitter clock multipliers. The 'A' designation indicates support for high-frequency outputs up to 1028 MHz with both integer and fractional synthesis capabilities. The 'B02956' suffix identifies a specific factory preprogrammed configuration generated via ClockBuilder Pro software, distinguishing it from blank prototyping devices.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345A-D-GM