SI5347A-B04708-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5347A-B04708-GMR is a jitter-attenuating clock multiplier from Skyworks Solutions, featuring four independent DSPLLs and eight outputs in a 64-QFN package. It supports any-frequency conversion with ultra-low jitter of 95 fs rms (12 kHz to 20 MHz). Input frequencies range from 8 kHz to 750 MHz (differential) or 8 kHz to 250 MHz (LVCMOS), while output frequencies span 100 Hz to 720 MHz (differential) or up to 250 MHz (LVCMOS). The device operates on a 1.8 V core supply and 3.3 V I/O supply within a -40°C to +85°C temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for flexible timing paths
• Supports hitless input switching and automatic holdover modes
• Features programmable jitter attenuation bandwidth per DSPLL
• Includes glitchless frequency changes and DCO mode

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 B04708 against official Skyworks documentation to confirm factory pre-programmed configuration details. Ensure compatibility with ClockBuilder Pro software settings for the designated numerical sequence ID. Confirm RoHS compliance and lead-free status as specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple independent low-jitter clock domains are required from various input sources. The Si5347A variant supports differential output frequencies up to 720 MHz. Consider the Fastlock feature for applications requiring rapid lock acquisition times with low nominal loop bandwidths.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5347 family, which utilizes fourth-generation DSPLL technology. It serves as a high-performance solution for maximum integration and independent timing paths compared to older generation synthesizers. The Si5346 is the dual-DSPLL counterpart in a smaller package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5347A-D-GM is a standard tape-and-reel option within the same family. Verify if custom pre-programmed configurations are strictly necessary; otherwise, standard variants may be available.