SI5394L-A-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5394L-A-GMR is a clock synthesizer and jitter attenuator from Skyworks Solutions, belonging to the Si5394 series. It features four inputs and four outputs with an integrated reference oscillator. The device supports integer-only frequency synthesis modes and generates output frequencies ranging from 0.0001 MHz to 1028 MHz. It utilizes fourth-generation DSPLL technology for ultra-low jitter performance. The component is housed in a 44-LGA package measuring 7x7 mm and operates within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a crystal reference to reduce board space and improve system reliability
• Supports free-run, synchronous, and holdover modes for continuous clock generation
• Enables enhanced hitless switching to minimize phase transients during input changes
• Allows configuration via serial interface with non-volatile memory storage

Clock Generators, PLLs, Frequency Synthesizers Applications

• 56G/112G PAM4 SerDes clocking
• OTN muxponders and transponders
• 10/40/100/200/400G networking line cards
• Medical imaging systems
• Test and measurement equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'R' if tape and reel packaging is required, as standard parts may come in trays. Confirm that the factory preprogrammed configuration matches the target design requirements before placing orders. Ensure compliance with humidity sensitivity handling procedures during assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this grade when an integrated reference is preferred over external components to save board space. Verify that integer-only synthesis meets the frequency plan needs, as fractional mode is not supported in this variant. Check compatibility with LVDS, LVPECL, LVCMOS, CML, and HCSL output formats.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5394 family, which offers four inputs and four outputs. It serves as a drop-in replacement for the Si5344 series. The L-grade specifically denotes the inclusion of an internal crystal oscillator, distinguishing it from A/B/C/D grades that require external references.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5394L-A-GMR is designed as a drop-in compatible replacement for the Si5344 series devices. When substituting, ensure the legacy design supports the updated package dimensions and pinout configurations provided by the newer generation architecture.