SI5335B-B05296-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335B-B05296-GMR 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 input options including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs. Outputs are configurable as LVPECL, LVDS, CML, HCSL, CMOS, or SSTL/HSTL with independent voltage levels of 1.5, 1.8, 2.5, or 3.3 V. It operates on a single core supply of 1.8, 2.5, or 3.3 V within an ambient 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 supporting external crystals, CMOS, SSTL/HSTL, and differential signals
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats

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
• DSL jitter attenuation and MSAN/DSLAM/PON systems
• Processor and FPGA clocking
• Broadcast video/audio timing and Fibre Channel/SAN

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the B05296 suffix against the system requirements before procurement. Confirm that the QFN-24 package dimensions and thermal pad grounding meet the PCB layout specifications. Ensure the selected core and output supply voltages align with the device's recommended operating conditions.

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 the appropriate loop bandwidth (1.6 MHz or 475 kHz) based on whether jitter attenuation for PCIe or DSL is needed. Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) can be supported by the available power rails for each output bank.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'B' variant typically denotes specific performance or feature sets within the series, while the alphanumeric suffix indicates a unique factory-programmed configuration. It replaces multiple discrete clock oscillators and buffers, simplifying board design and reducing component count.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements must support the same pinout and electrical characteristics. Verify that alternative devices offer comparable jitter performance and support the required output formats. Ensure that the replacement device can be configured to match the specific frequency plan and control pin functions of the original design.