SI5344H-D-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5344H-D-GMR is a high-frequency, ultra-low jitter attenuating clock multiplier featuring fourth-generation DSPLL and MultiSynth technologies. It provides two inputs and four outputs in a QFN-44 package. High-Frequency Mode supports up to 2.75 GHz with typical phase jitter under 50 fs-rms (1 MHz–40 MHz). MultiSynth Mode enables any frequency up to 717.5 MHz with typical jitter under 150 fs-rms (12 kHz–20 MHz). The device operates on a core voltage of 1.8 V ±5% and an analog supply of 3.3 V ±5%. Input frequencies range from 8 kHz to 750 MHz. It includes programmable jitter attenuation bandwidths from 10 Hz to 4 kHz and supports glitchless output frequency changes.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL with MultiSynth technology for flexible frequency synthesis
• Supports DCO-control with step resolution as low as 0.001 ppb
• Features fully integrated loop filter to eliminate discrete noise coupling risks
• Includes in-circuit programmable non-volatile memory for known power-up configurations

Clock Generators, PLLs, Frequency Synthesizers Applications

• 100G/200G/400G Coherent Optical Transceivers
• Clocking Forward Error Correction (FEC) circuits
• Wireless base-stations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure compatibility with ClockBuilder Pro software versions used for configuration. Confirm RoHS compliance status and humidity sensitivity handling requirements during storage and assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when ultra-low jitter performance is required for coherent optical applications or high-speed digital systems. Evaluate whether High-Frequency Mode or MultiSynth Mode best suits the target output frequencies. Consider the availability of factory preprogrammed devices if custom NVM content is needed without in-circuit programming.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344H/42H family of high-frequency clock multipliers. The 'D' suffix typically denotes a specific package or revision variant within the Skyworks portfolio. It shares architectural similarities with other Si534x series devices but offers distinct output counts and frequency capabilities tailored for next-generation infrastructure.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5344H variants with matching pinouts and electrical characteristics. Verify that substitute parts support the same input/output frequency ranges and jitter performance metrics. Check for compatibility with existing serial interface configurations and NVM programming tools.