SI5347D-B04927-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5347D-B04927-GMR is a jitter attenuator featuring four independent DSPLLs in a 64-QFN package. It supports up to eight outputs with frequencies ranging from 100 Hz to 350 MHz for differential signals and 100 Hz to 250 MHz for LVCMOS. Input frequencies range from 8 kHz to 750 MHz (differential) or 8 kHz to 250 MHz (LVCMOS), with an external crystal option of 25–54 MHz. The device operates on a core voltage of 1.8 V ±5% and I/O voltages of 3.3, 2.5, or 1.8 V. Typical output jitter is 95 fs rms (12 kHz–20 MHz). Operating temperature spans -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for flexible any-frequency conversion
• Supports hitless input switching and automatic holdover modes
• Features programmable loop bandwidths and glitchless frequency changes
• Includes in-circuit non-volatile memory for known power-up configurations

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN Muxponders and Transponders
• 10/40/100G network line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• Broadcast video systems

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 factory pre-programmed configuration ID matches the required timing plan. Check for RoHS compliance status and lead times directly with authorized distributors as availability may vary.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when four independent clock domains are required within a single component. Ensure the application requires output frequencies below 350 MHz for differential outputs. Verify that the input sources support the specified voltage levels and that the system can accommodate the 64-QFN footprint. Use ClockBuilder Pro software to configure the specific jitter attenuation bandwidths.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5347 family of high-performance jitter attenuators. It utilizes fourth-generation DSPLL technology to provide low-jitter clock multiplication. The 'D' designation indicates a maximum output frequency limit of 350 MHz for differential outputs, distinguishing it from higher-speed variants like the 'A' or 'C' models which support up to 720 MHz.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5347A-D-GMR: Supports higher output frequencies up to 720 MHz. Si5347B-D-GMR: Supports up to 350 MHz but may have different electrical characteristics. Si5347C-D-GMR: Supports up to 720 MHz. Verify pin compatibility and register settings before substitution.