SI5518B-B15714-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5518B-B15714-GMR 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. Maximum output frequency reaches 3.2 GHz, with a minimum PLL input bandwidth of 1 mHz. It features support for 1PPS inputs and outputs, ensuring precise timing synchronization. The component operates within a temperature range of -40°C to +85°C and utilizes a 72-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates four DSPLLs for complex synchronization architectures
• Supports IEEE 1588 Precision Time Protocol applications
• Provides programmable loop bandwidth down to 1 mHz
• Includes 1PPS/PP2S input and output capabilities

Clock Generators, PLLs, Frequency Synthesizers Applications

• 5G Radio Units (RU) and O-RU systems
• Small cells, pico cells, and DAS networks
• IEEE 1588 Grandmasters and boundary clocks

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm pinout compatibility and electrical specifications. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure design reviews account for the 72-QFN exposed pad thermal requirements during layout.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high channel count synchronization is required alongside ultra-low jitter performance. The integrated architecture replaces multiple discrete components, simplifying the bill of materials. Evaluate the need for four independent DSPLLs versus single-PLL alternatives based on phase noise requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the NetSync family of network synchronizers designed for wireless infrastructure. It combines jitter attenuation with precise time protocol handling in a single integrated circuit. The series targets demanding telecommunications environments requiring strict adherence to ITU-T standards.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult official Skyworks substitution guides for verified equivalents. Verify that alternative devices maintain identical pin configurations and software compatibility before implementation.