SI5335A-B05199-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335A-B05199-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 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 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-output clock generator supporting any frequency up to 350 MHz with 0 ppm synthesis error via MultiSynth fractional divider technology.
• Three independent, user-assignable, pin-selectable device configurations allowing one device to replace multiple clock generators.
• Flexible input options: External crystal (25/27 MHz), CMOS (10–200 MHz), SSTL/HSTL (10–350 MHz), and differential (10–350 MHz).
• Independently configurable outputs supporting LVPECL/LVDS/CML (1–350 MHz), HCSL (1–250 MHz), CMOS (1–200 MHz), and SSTL/HSTL (1–350 MHz).

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
• Processor and FPGA clocking
• DSL jitter attenuation and telecom line cards
• Broadcast video/audio timing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05199, as this part is web-customized. Confirm that the required pin-selectable control functions (SSENB, RESET, OEB, FS) match the system design requirements. Ensure the selected output voltage levels and driver formats align with the target receiver specifications before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single device must replace multiple fixed-frequency oscillators or buffers. Choose based on the need for independent output voltage levels (1.5, 1.8, 2.5, or 3.3 V) and mixed single-ended/differential output formats. Consider the two selectable PLL loop bandwidths (1.6 MHz or 475 kHz) for appropriate jitter attenuation in PCIe or DSL applications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The SI5335A-B05199-GM belongs to the Si5335 family of highly flexible clock generators. Unlike standard off-the-shelf parts, this specific model is factory-customized via the ClockBuilder Pro utility. The 'GM' suffix indicates a lead-free, halogen-free RoHS-compliant package, typically a 24-lead QFN (4x4 mm).

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacement requires matching the custom frequency plan and pin configuration. Verify compatibility with existing PCB land patterns for the 24-QFN package. Ensure the new unit's pin-selectable control assignments (FS0, FS1, RESET, etc.) function correctly in the host system.