SI5335A-B04403-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335A-B04403-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 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 operates on a single core supply of 1.8, 2.5, or 3.3 V within the –40 to +85 °C temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Synthesizes four independent, non-integer-related output frequencies up to 350 MHz with 0 ppm frequency error
• Configurable as a clock generator or buffer with support for multiple output formats (LVPECL, LVDS, CML, HCSL, CMOS, SSTL/HSTL)
• Two selectable PLL loop bandwidths (1.6 MHz or 475 kHz) for jitter attenuation in applications like PCIe and DSL
• Supports three independent, pin-selectable device configurations via user-assignable control pins

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 interfaces
• 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 ordering suffix B04403 against the system requirements using the ClockBuilder Pro utility. Confirm that the required input reference type and output voltage levels match the programmed settings. Check current availability status as customized parts may have limited stock or longer lead times depending on manufacturer production schedules.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when four distinct, non-integer-related clock frequencies are required from a single device. Ensure the input reference matches the supported types: 25/27 MHz crystal, CMOS (10–200 MHz), or differential/SSTL/HSTL (10–350 MHz). Verify that the target output formats and voltage levels (1.5–3.3 V) are compatible with the load requirements. Consider the PLL loop bandwidth setting based on whether jitter attenuation or free-running generation is needed.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335A-B04403-GM belongs to the Si5335 family of highly flexible clock generators. The 'A' indicates the A-series variant, while the suffix 'B04403' denotes a specific factory-programmed configuration generated via the ClockBuilder Pro tool. The '-GM' suffix typically indicates a tape-and-reel packaging option, distinguishing it from tray-packaged variants.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements require identical frequency plans and output configurations. Generic Si5335 devices can replace this unit only if reprogrammed via ClockBuilder Pro to match the exact specifications. Other Skyworks families like Si534x or Si539x offer higher performance but require design changes.