SI5345A-B03293-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B03293-GM is a factory preprogrammed, low-jitter clock multiplier and jitter attenuator from the Si5345 family. It features four inputs and ten outputs housed in a 64-QFN package. The device supports integer and fractional synthesis with output frequencies ranging from 0.001 MHz to 1028 MHz. It utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. The unit operates within a temperature range of -40°C to +85°C and accepts differential input frequencies up to 750 MHz or LVCMOS up to 250 MHz.

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 combined 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 factory preprogrammed configuration associated with the suffix B03293 against the target system requirements before procurement. Confirm that the ordering part number matches the required frequency plan and output settings defined by Skyworks ClockBuilder Pro software. Ensure compatibility with the 64-QFN package footprint and voltage supply specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when high channel count (10 outputs) and wide frequency range (up to 1028 MHz) are required. The 'A' variant specifically supports both integer and fractional synthesis modes. Verify that the application requires the specific preprogrammed configuration provided by the unique numerical sequence in the part number rather than a blank prototyping device.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 Rev D family, which combines fourth-generation DSPLL and MultiSynth technologies. The Si5345A variant is distinguished by its support for both integer and fractional frequency synthesis modes, unlike the 'C' variant which is integer-only. The device is designed for applications demanding the highest level of jitter performance and flexible clock generation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345A-D-GM serves as the generic base model for this family member. Other variants such as SI5345B-D-GM offer lower maximum output frequencies (350 MHz). Replacement requires matching the specific preprogrammed configuration if available, or reprogramming a blank device using ClockBuilder Pro software to replicate the original design parameters.