SI5335B-B05296-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335B-B05296-GM is a web-customizable, any-frequency, any-output quad clock generator and buffer from Skyworks Solutions. 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 compatible with LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output voltage selection. Key electrical parameters include a typical core supply current of 45 mA in PLL mode, a phase jitter of 0.7 ps RMS, and an operating temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• MultiSynth fractional divider technology for 0 ppm frequency synthesis error across four outputs
• Three independent, user-assignable, pin-selectable device configurations
• Flexible input reference options including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs
• Two selectable PLL loop bandwidths (1.6 MHz or 475 kHz) for jitter attenuation

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• DSL and telecom line card jitter attenuation
• Processor and FPGA clocking solutions

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the B05296 suffix against system requirements, as this part is web-customized. Confirm that the pin-selectable control functions (SSENB, RESET, OEB, FS) align with the hardware design. Ensure the PCB land pattern matches the 24-QFN (4x4 mm) outline specified in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with zero ppm error. Choose between the 1.6 MHz and 475 kHz loop bandwidths based on whether jitter attenuation or fast lock time is prioritized. Ensure the output driver voltage levels (1.5, 1.8, 2.5, or 3.3 V) match the receiving device specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335 belongs to Skyworks' MultiSynth family of programmable clock generators. Unlike fixed-frequency oscillators, this device allows for complete customization of output frequencies and formats via the ClockBuilder Pro utility. The 'B' in the part number typically denotes a specific revision or feature set within the Si5335 series, while the numeric suffix defines the unique factory-programmed configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements must be other Si5335 variants with matching pin configurations and package types. Verify that alternative part numbers support the same output formats and frequency ranges. Note that different suffixes indicate different factory configurations; swapping parts requires re-verifying the programmed settings.