SI5344A-B04126-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344A-B04126-GM is a factory preprogrammed clock synthesizer and jitter attenuator from Skyworks Solutions. It belongs to the Si5344 family, featuring four inputs and four outputs in a 44-QFN package. The device supports integer and fractional frequency synthesis with output frequencies ranging from 0.001 MHz to 1028 MHz. It operates on a core voltage of 1.8 V ±5% and an analog supply of 3.3 V ±5%. The component functions within a temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL technology.
• Features ultra-low jitter performance of 90 fs rms for high-speed data transmission applications.
• Supports hitless input clock switching between fractionally related clocks without phase offset propagation.
• Includes in-circuit programmable non-volatile memory to ensure known frequency configuration upon power-up.

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 numerical sequence 'B04126' against the manufacturer's ordering guide to confirm the exact preprogrammed configuration parameters. Factory preprogrammed devices are assigned unique part numbers representing their specific configuration. Ensure compatibility with the required serial interface and voltage levels before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a fixed, preconfigured clock solution is required rather than field-programmable flexibility. The 'A' suffix indicates support for integer and fractional synthesis up to 1028 MHz. Verify that the 44-QFN package dimensions fit the PCB land pattern and that the operating temperature range meets environmental requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component is part of the Si5345/44/42 Rev D family, which utilizes MultiSynth and DSPLL technologies. The Si5344 variant specifically provides four inputs and four outputs in a compact 7x7 mm 44-QFN package. It is designed for applications requiring high jitter attenuation and flexible clock generation capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5344A-D-GM: Field-programmable equivalent with identical electrical specifications but requires external configuration via ClockBuilder Pro software.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the SI5344A series?

The SI5344A series supports differential output frequencies up to 1028 MHz.

How does the device handle input clock failures?

The device automatically enters holdover mode if the selected input clock becomes invalid and no other valid inputs are available, using stored historical frequency data to maintain output stability.

Is the loop filter integrated into the chip?

Yes, the loop filter is fully integrated on-chip, eliminating the risk of noise coupling associated with discrete solutions.