SI5335A-B04277-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5335A-B04277-GM is a web-customizable, any-frequency, any-output quad clock generator and buffer. It synthesizes four non-integer-related frequencies up to 350 MHz using MultiSynth technology, ensuring 0 ppm frequency synthesis error. The device supports three independent pin-selectable configurations and features flexible output drivers configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats with independent voltage levels of 1.5, 1.8, 2.5, or 3.3 V. It operates on a single core supply (1.8, 2.5, or 3.3 V) and accepts external crystals (25/27 MHz), CMOS, differential, or SSTL/HSTL inputs.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four independent outputs supporting any frequency (< 350 MHz) and format via MultiSynth fractional divider technology
• Three user-assignable, pin-selectable device configurations replace multiple clock ICs
• Low phase jitter performance: 0.7 ps RMS typical in clock generator mode
• Flexible input options including external crystal, CMOS, differential, and SSTL/HSTL signals

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 1/2/3/4 common clock and jitter attenuation
• Ethernet switch/router and 1 GbE/10 GbE timing
• Processor and FPGA clocking systems
• DSL jitter attenuation and telecom line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B04277 against the system requirements. This part is a custom-programmed device; standard off-the-shelf alternatives do not exist. Confirm that the required pin-selectable control functions and output voltage levels match the design specifications before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single device must replace multiple fixed-frequency oscillators or buffers. Ensure the design utilizes the ClockBuilder Pro utility to define the exact frequency plan and control pin assignments. Verify that the target application requires the specific low-jitter characteristics provided by the 1.6 MHz or 475 kHz loop bandwidth settings available in this family.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'A' variant typically denotes specific electrical or packaging revisions within the series. The 'GM' suffix indicates a lead-free, halogen-free RoHS-compliant package. The unique identifier B04277 represents the proprietary factory programming data defining the internal frequency synthesis parameters.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements require identical factory programming. No generic cross-model substitutes are publicly confirmed for this specific frequency plan. Evaluate other Si5335 variants only if the custom configuration can be reprogrammed using the same hardware platform.