SI5347A-B05708-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5347A-B05708-GM is a quad DSPLL jitter attenuator and clock multiplier from Skyworks Solutions. It integrates four independent DSPLLs within a 64-lead QFN package to provide any-frequency conversion capabilities. The device supports differential input frequencies ranging from 8 kHz to 750 MHz and generates output frequencies up to 720 MHz. It features ultra-low jitter performance of 95 fs rms, programmable loop bandwidths, and hitless input switching. Power supply requirements include VDD at 1.8 V and VDDA at 3.3 V, with operation supported across a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for flexible timing paths
• Supports automatic and manual hitless input clock switching
• Includes in-circuit programmable non-volatile memory for configuration retention
• Provides status monitoring for loss of signal and loss of lock conditions

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm factory pre-programmed configurations. Confirm package availability and lead times through authorized distributors. Ensure compatibility with ClockBuilder Pro software settings before finalizing procurement orders.

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 output frequencies up to 720 MHz, suitable for high-speed serial links. Evaluate the need for holdover modes and gapped clock synchronization capabilities during system design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5347 family of dual/quad DSPLL jitter attenuators. It shares architectural similarities with the Si5346, which offers a dual DSPLL configuration in a smaller package. Both devices utilize fourth-generation DSPLL technology for high-performance frequency synthesis and jitter cleaning.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5347B-D-GM serves as a direct functional replacement within the same package, though it limits maximum output frequency to 350 MHz. Verify that the application does not require frequencies above 350 MHz before substituting.