SI5391A-A14067-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5391A-A14067-GM is a factory pre-programmed ultra low-jitter clock generator featuring 12 outputs and up to 1028 MHz maximum output frequency. It utilizes MultiSynth fractional synthesizer technology for any-frequency, any-output synthesis with jitter performance of 115 fs RMS in fractional mode. The device operates on a 1.8 V core voltage and 3.3 V analog supply within a -40°C to +85°C temperature range. It is housed in a 64-QFN 9x9mm package and supports LVDS, LVPECL, LVCMOS, CML, and HCSL output formats.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes
• Provides highly configurable differential and single-ended outputs compatible with multiple signal formats
• Features in-circuit programmable non-volatile memory for custom factory pre-programming

Clock Generators, PLLs, Frequency Synthesizers Applications

• 100/200/400G switches
• 56G/112G PAM4 SerDes reference clocks
• Clock tree generation replacing XOs, buffers, and signal format translators
• Clocking for FPGAs, processors, and memory
• Ethernet switches/routers and OTN framers/mappers/processors

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific configuration encoded in the unique numerical sequence '14067' against system requirements before procurement. Confirm that the factory pre-programmed settings match the required input/output frequencies and signal formats. Ensure compatibility with the host serial interface if runtime reconfiguration is needed.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, pre-configured clock solution is preferred over a programmable one to simplify design. Verify that the 1028 MHz upper frequency limit meets all output requirements. Consider the 115 fs RMS jitter in fractional mode as the baseline performance metric for the application.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5391 family of ultra low-jitter clock generators. The 'A' designation indicates support for both integer and fractional synthesis modes up to 1028 MHz. The suffix '-GM' denotes the 64-QFN package and industrial temperature range. Custom ordering part numbers are assigned by ClockBuilder Pro software.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5391A-Axxxxx-GM (Generic Family)

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the Si5391A grade?

The Si5391A grade supports differential output frequencies up to 1028 MHz.

How is the device configured for factory pre-programming?

Custom configurations are generated using the ClockBuilder Pro software utility, which assigns a unique numerical sequence to the part number representing the preprogrammed settings.

What types of output signal formats are supported?

The device supports LVDS, LVPECL, LVCMOS, CML, and HCSL output formats with programmable signal amplitude.