SI5335C-B04284-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5335C-B04284-GMR 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 flexible input references including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs. Outputs are independently configurable for LVPECL, LVDS, CML, HCSL, CMOS, or SSTL/HSTL formats with selectable supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It features low phase jitter of 0.7 ps RMS, two selectable PLL loop bandwidths (1.6 MHz or 475 kHz), and up to five user-assignable control pins for system configuration.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Synthesizes four independent, non-integer-related output frequencies up to 350 MHz with 0 ppm frequency error
• Supports multiple input types: external crystal, CMOS, SSTL/HSTL, and differential signals
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats
• Features low phase jitter (0.7 ps RMS typical) and selectable PLL loop bandwidths (1.6 MHz or 475 kHz)

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
• DSL jitter attenuation and telecom line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory customization parameters associated with the B04284 suffix via the official Skyworks ClockBuilder Pro utility or datasheet ordering section. Confirm availability status directly with authorized distributors as custom parts may have limited stock or specific lead times. Ensure the required pin configurations and output formats match the pre-programmed settings in the device.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single device must replace multiple clock generators or buffers by providing four distinct output frequencies. Choose between the 1.6 MHz and 475 kHz loop bandwidth options based on whether PCIe or DSL jitter attenuation requirements are prioritized. Ensure the input reference source matches one of the supported formats (crystal, CMOS, or differential) and that the output voltage levels align with the target receiver specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335C-B04284-GMR belongs to the Si5335 family of highly flexible clock generators. The 'C' variant typically denotes specific internal configuration or package variations within the series, while the alphanumeric suffix indicates a unique factory-programmed frequency plan. This part is designed to simplify system design by consolidating multiple clock sources into one customizable IC.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-to-pin replacements require identical frequency plans and output configurations. Verify compatibility with existing PCB layouts and control pin assignments. Alternative Si5335 variants may offer different loop bandwidths or input/output capabilities but will not replicate the exact synthesized frequencies without reconfiguration.