SI5518E-B15664-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5518E-B15664-GM is a NetSync™ network synchronizer manufactured by Skyworks Solutions. It integrates four DSPLLs and supports up to six clock inputs and eighteen clock outputs. The device delivers ultra-low jitter performance of less than 55 fs RMS, with maximum output frequencies reaching 3.2 GHz. It features programmable loop bandwidth down to 1 mHz and supports IEEE 1588 Precision Time Protocol (PTP) applications via software adjustment. The component operates within a temperature range of -40°C to 95°C and utilizes a 72-VFQFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four independent DSPLLs for complex synchronization architectures
• Supports Synchronous Ethernet wander filtering and 1PPS/PP2S I/O
• Provides programmable phase and frequency adjustment for IEEE 1588 compliance
• Delivers ultra-low additive jitter suitable for high-speed serial data transfer

Clock Generators, PLLs, Frequency Synthesizers Applications

• 5G Radio Units (RU) and O-RAN architectures
• Baseband units (BBU) and Centralized Compute platforms
• IEEE 1588 Grandmasters and Boundary Clocks
• Core, Metro, and Edge Switches/Routers

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm pinout and electrical characteristics. Confirm availability through authorized distributors as supply status may vary. Ensure design compatibility with required voltage levels and thermal management specifications before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when multiple independent PLL domains are required for diverse clocking needs. Evaluate the 72-QFN footprint against board space constraints. Verify that the input reference sources match the supported frequency ranges and signal formats for optimal jitter attenuation performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the NetSync™ family designed for telecom and datacom timing. It replaces discrete oscillators and buffers in complex clock trees. The E variant typically denotes specific packaging or configuration options within the broader SI5518 series architecture.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult the official Skyworks Product Selector Guide for direct functional equivalents. Cross-reference pinouts and electrical parameters carefully when considering alternative SKUs from the same product family.