SI5348B-D08033-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5348B-D08033-GM is a network synchronizer and jitter attenuator featuring three independent DSPLLs in a 64-lead QFN package. It supports differential output frequencies from 1 PPS to 350 MHz and LVCMOS outputs up to 250 MHz. Input ranges include external crystals (48–54 MHz), REF clocks (5–250 MHz), differential clocks (8 kHz–750 MHz), and LVCMOS clocks (8 kHz–250 MHz). The device operates on core voltages of 1.8 V and 3.3 V, with independent output supplies selectable at 1.8 V, 2.5 V, or 3.3 V. It functions within a temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three independently configurable DSPLLs supporting SyncE, IEEE 1588, and SETS architectures
• Ultra-low jitter performance of 100 fs typical across the 12 kHz to 20 MHz bandwidth
• Digitally controlled oscillator (DCO) mode enabling precise frequency adjustment for PTP clock steering
• Flexible input selection with manual or automatic switching capabilities including hitless and ramped transitions

Clock Generators, PLLs, Frequency Synthesizers Applications

• Synchronous Ethernet (SyncE) ITU-T G.8262 EEC Option 1 & 2
• Telecom Boundary Clock (T-BC) as defined by ITU-T G.8273.2
• IEEE 1588 (PTP) slave clock synchronization
• Stratum 3/3E, G.812, G.813 network synchronization

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure compatibility with required pre-programmed configurations. Confirm that the component meets all applicable environmental compliance standards for the intended deployment region before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require a maximum output frequency of 350 MHz. Ensure the design accommodates the necessary external crystal and reference clock components to meet stability requirements. Verify that the serial interface configuration aligns with the system's control architecture.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5348 family of network synchronizers. It shares architectural similarities with other devices in the series but is distinguished by its specific frequency limitations and internal configuration parameters assigned during manufacturing.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult the official ordering guide for direct substitutes. Alternative part numbers may exist within the same product family with adjusted frequency ranges or pin configurations.