SI5335A-B05594-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335A-B05594-GM is a web-customizable, any-frequency, any-output quad clock generator and buffer manufactured by Skyworks Solutions. It synthesizes four non-integer-related frequencies up to 350 MHz using MultiSynth fractional divider 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 a 4x4 mm 24-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• MultiSynth Technology: Synthesizes four independent frequencies up to 350 MHz with 0 ppm error.
• Flexible I/O: Supports multiple input formats (XTAL, CMOS, Differential) and output drivers (LVPECL, LVDS, CML, HCSL, CMOS, SSTL/HSTL).
• Pin-Selectable Configurations: Up to three independent device configurations selectable via pins.
• Low Jitter Performance: Typical RMS jitter of 0.7 ps; compliant with PCIe Gen 1/2/3/4 common clock and SRNS standards.

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 1/2/3/4 clocking and jitter attenuation
• Ethernet switch/router and 1 GbE/10 GbE systems
• DSL jitter attenuation
• Processor and FPGA clocking
• Broadcast video/audio timing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05594, as this part is web-customized. Confirm that the required pin-selectable configurations and output formats match the design requirements. Check current availability status with distributors, as customized parts may have limited stock or longer lead times compared to standard components.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single device must replace multiple clock generators or buffers for different system states. Ensure the input reference frequency matches the supported ranges (25/27 MHz XTAL, 10-350 MHz digital). Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, 3.3V) are compatible with the target receivers. Use the ClockBuilder Pro utility to generate the specific configuration file for the B05594 suffix.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'A' indicates it is a clock generator variant, while 'B05594' represents a specific factory-programmed configuration. It is distinct from the Si5338, which offers additional synchronization capabilities. The device is designed to simplify system design by consolidating multiple clock sources into one programmable IC.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacement requires verifying that the new part has the same factory configuration (B05594). If the configuration differs, the pin functions and output frequencies will not match. Standard Si5335 devices without the custom suffix cannot be used directly unless reconfigured via the ClockBuilder tool and ordered as a new custom part.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the SI5335A?

The device supports output frequencies up to 350 MHz for LVPECL, LVDS, CML, HCSL, and SSTL/HSTL formats. CMOS outputs are supported up to 200 MHz.

How does the device handle frequency synthesis error?

Using Skyworks' patented MultiSynth fractional divider technology, all outputs are guaranteed to have 0 ppm frequency synthesis error regardless of the configuration.

Can the SI5335A operate in both clock generator and buffer modes?

Yes, the device can be configured as either a clock generator (using the PLL) or a clock buffer (PLL bypass mode) depending on the system requirements and configuration settings.