SI5347A-B03638-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5347A-B03638-GMR is a quad DSPLL jitter attenuator from Skyworks Solutions, packaged in a 64-lead QFN. It integrates four independent phase-locked loops to synchronize multiple inputs and generate any combination of output frequencies. 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 720 MHz for differential signals and up to 250 MHz for LVCMOS. It features ultra-low jitter performance with a typical value of 95 fs rms (12 kHz to 20 MHz). The component operates within a temperature range of -40°C to +85°C and utilizes an I2C or SPI serial interface for configuration.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for flexible timing paths
• Supports hitless and glitchless input clock switching
• Includes automatic free-run and holdover modes
• Features programmable jitter attenuation bandwidth per DSPLL

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN Muxponders and Transponders
• 10/40/100G network line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet
• Carrier Ethernet switches
• Broadcast video

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm that the custom numerical sequence corresponds to the intended factory pre-programmed configuration. Ensure compatibility with the required serial interface protocol before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high integration and independent timing paths are required. The quad DSPLL architecture allows routing any input to any output. Verify that the application requires the specific frequency ranges supported by the 'A' grade variant. Use ClockBuilder Pro software to determine the exact part number for the desired configuration.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5347 family, which offers industry-integrated jitter-attenuating clock generator solutions. The Si5347 variant specifically provides four DSPLLs in a larger 64-QFN package compared to the dual-DSPLL Si5346. It represents the fourth generation of DSPLL technology designed for maximum flexibility in complex timing architectures.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5347B-D-GM1,2 serves as a functional alternative within the same series. Selection depends on whether the specific frequency range requirements align with the B grade specifications rather than the A grade.