SI5345A-B03889-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345A-B03889-GMR is a 10-output jitter attenuator and clock multiplier from the Si5345 family. It supports any-frequency generation up to 1028 MHz using fourth-generation DSPLL and MultiSynth technologies. The device features four inputs (differential or LVCMOS) and ten configurable outputs supporting LVDS, LVPECL, LVCMOS, CML, and HCSL formats. It operates within a temperature range of -40°C to +85°C in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency with ultra-low jitter performance.
• Supports hitless input clock switching and glitchless on-the-fly output frequency changes.
• Includes in-circuit programmable non-volatile memory for known power-up configuration.
• Integrates a fully on-chip loop filter to eliminate discrete noise coupling risks.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory preprogrammed configuration associated with the B03889 suffix against the design requirements. Confirm availability status as custom parts may have restricted supply channels. Ensure the ordering suffix matches the required tape and reel packaging option if applicable.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for applications requiring high channel counts and flexible frequency synthesis. The Si5345A variant supports fractional synthesis up to 1028 MHz. Use ClockBuilder Pro software to define the specific frequency plan and verify that the external crystal specifications meet the jitter performance targets.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5345A specifically denotes the high-performance variant capable of fractional synthesis across the full differential output frequency range. It shares the same physical package and core architecture with the Si5344 and Si5342 models.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5345A variants with different preprogrammed configurations. Verify pin compatibility and electrical specifications when substituting with Si5344 or Si5342 models, noting the reduced output count.