SI5335D-B02903-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5335D-B02903-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 input options including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs. Outputs are configurable as LVPECL, LVDS, CML, HCSL, or CMOS 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

• Four independent output banks supporting any frequency up to 350 MHz with 0 ppm synthesis error
• Three user-assignable, pin-selectable device configurations for replacing multiple ICs
• Flexible input reference: External crystal, CMOS, SSTL/HSTL, or differential signals
• Configurable output drivers: LVPECL, LVDS, CML, HCSL, CMOS, SSTL, HSTL with independent voltage levels

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 1/2/3/4 common clock generation
• Ethernet switch/router clocking
• Processor and FPGA clocking
• DSL jitter attenuation
• Broadcast video/audio timing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the B02903 suffix against system requirements. Confirm that the 24-QFN package dimensions and thermal pad grounding meet PCB layout specifications. Ensure the selected core supply voltage (1.8V, 2.5V, or 3.3V) matches the design constraints for power consumption and noise performance.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model if the application requires four distinct output frequencies with zero ppm error. Choose between the 1.6 MHz or 475 kHz loop bandwidth based on jitter attenuation needs for PCIe or DSL applications. Verify that the required output formats (LVPECL, LVDS, etc.) and voltage levels are supported by the specific B02903 configuration file loaded at the factory.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335D variant belongs to the Si5335 family of highly flexible clock generators. The 'D' suffix typically denotes specific electrical characteristics or package variations within the broader Si5335 product line, which also includes variants like SI5335A and SI5335B. This component replaces discrete oscillators and buffers in complex digital systems.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include other Si5335 models with compatible output counts and frequency ranges. Substitution requires verifying that the replacement part's factory-loaded configuration matches the original frequency plan and pin assignments.