SI5345A-B04583-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B04583-GM is a 10-output clock synthesizer and jitter cleaner from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input, supporting integer and fractional synthesis modes. The device features an ultra-low jitter performance of 90 fs rms. It operates within a supply voltage range of 1.71 V to 3.47 V and supports output frequencies up to 1028 MHz for differential outputs. The component is housed in a 64-QFN package measuring 9x9 mm and functions reliably across 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 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 between fractionally related inputs and glitchless on-the-fly output frequency changes.
• Includes in-circuit programmable non-volatile memory (NVM) for storing configuration data, ensuring known power-up states.

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 suffix against the manufacturer's current datasheet to confirm factory preprogramming details. Ensure compatibility with ClockBuilder Pro software for configuration. Check for RoHS compliance status and moisture sensitivity levels before procurement. Confirm package dimensions and pinout alignment with PCB layout requirements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high-frequency generation up to 1028 MHz is required alongside low-jitter performance. The Si5345A variant supports both integer and fractional synthesis, unlike the Si5345C which is integer-only. Consider the 64-QFN package size for board space constraints. Verify input/output signal level compatibility with LVDS, LVPECL, LVCMOS, CML, or HCSL standards.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 family of jitter attenuating clock multipliers. It shares architectural similarities with the Si5344 and Si5342 models but offers a higher channel count with four inputs and ten outputs. The family utilizes common DSPLL and MultiSynth technologies, allowing for consistent design methodologies across different channel configurations.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345A-D-GM

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the SI5345A?

The SI5345A supports differential output frequencies up to 1028 MHz.

Does the device support hitless switching between input clocks?

Yes, the device supports hitless switching between input clocks that are frequency locked or have a fractional frequency relationship.

How is the device configured and programmed?

The device is programmable via a serial interface (I2C or SPI) and includes in-circuit programmable non-volatile memory (NVM). Configuration is simplified using Skyworks' ClockBuilder Pro software.