SI5335C-B05307-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5335C-B05307-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 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

• Four independent output banks supporting any frequency up to 350 MHz with 0 ppm synthesis error
• Configurable as clock generator or buffer with selectable PLL loop bandwidths (1.6 MHz or 475 kHz)
• Flexible input options: External crystal, CMOS, SSTL/HSTL, or differential signals
• Independent output voltage selection (1.5, 1.8, 2.5, or 3.3 V) and format support (LVPECL, LVDS, CML, HCSL, CMOS, SSTL/HSTL)

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 encoded in the B05307 suffix via the official datasheet or Skyworks ClockBuilder Pro utility, as this determines pin functions, frequency plans, and output configurations. Confirm availability status directly with Skyworks Solutions or authorized distributors, as custom parts may have limited stock or specific lead times. Ensure the ordering suffix matches the required electrical and functional parameters for the target application.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple non-integer-related clock frequencies are required from a single device. Choose between clock generator mode for frequency synthesis or buffer mode for jitter attenuation based on the input reference quality. Verify that the required output voltage levels (1.5V–3.3V) and signal formats (LVPECL, LVDS, etc.) are supported by the specific configuration. Ensure the input reference type (crystal vs. external clock) aligns with the system design constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335C-B05307-GM belongs to the Si5335 family of highly flexible clock generators. The 'C' indicates a specific configuration variant within the series, while 'GM' denotes the 24-QFN package. This part replaces multiple discrete clock oscillators and buffers, simplifying PCB layout and reducing power consumption compared to traditional solutions.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements require matching the specific frequency plan and pin configuration defined by the B05307 suffix. Generic Si5335 variants may not share the same factory settings. Verify compatibility with existing board layouts and control pin assignments before substitution.