SI5345D-B03729-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B03729-GMR is a jitter attenuating clock multiplier from the Si5345 family, featuring four inputs and ten outputs. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination with ultra-low jitter of 90 fs rms. The device supports differential input frequencies from 8 kHz to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential signals and 100 Hz to 250 MHz for LVCMOS. It operates on a core voltage of 1.8 V ±5% and an auxiliary voltage of 3.3 V ±5%, housed in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis.
• Features programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz for optimized performance.
• 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 ordering suffix against the manufacturer's current documentation to confirm tape-and-reel packaging and factory preprogramming status. Ensure compatibility with the ClockBuilder Pro software version used for configuration. Confirm that the custom numerical sequence corresponds to the intended jitter attenuation and frequency plan settings before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require low-frequency outputs capped at 350 MHz with high channel count. The 'D' variant specifically limits differential output frequencies to 350 MHz, distinguishing it from higher-speed counterparts. Verify that the required input/output signal formats align with the supported LVDS, LVPECL, LVCMOS, CML, and HCSL options available on the ten outputs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D series, which integrates DSPLL and MultiSynth technologies. The Si5345 variant provides four inputs and ten outputs in a 64-QFN package. The 'B03729' suffix indicates a factory preprogrammed configuration assigned by Skyworks, ensuring the device powers up with a specific, verified frequency plan without requiring external initialization.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345A-D-GMR offers higher output frequency capabilities up to 1028 MHz. SI5345C-D-GMR provides integer-only synthesis up to 1028 MHz. SI5345B-D-GMR shares the same 350 MHz differential output limit but may differ in factory programming or packaging format.