SI5335B-B05726-GMR

Overview

The SI5335B-B05726-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 fractional divider 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. It features independently configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats with selectable supply voltages of 1.5, 1.8, 2.5, or 3.3 V. Key electrical parameters include a core supply voltage range of 1.71–3.63 V, typical core current of 45 mA in PLL mode, and low phase jitter of 0.7 ps RMS.

Feature Summary

• Four independent outputs capable of synthesizing any frequency up to 350 MHz with 0 ppm error
• Supports three independent, pin-selectable device configurations for system flexibility
• Low phase jitter of 0.7 ps RMS with two selectable PLL loop bandwidths (1.6 MHz or 475 kHz)
• Configurable as a clock generator or buffer with loss-of-signal alarm functionality

Applications

• PCI Express Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking solutions
• DSL and PCIe jitter attenuation applications

Procurement Notes

Verify the specific factory configuration encoded in the B05726 suffix via the official Skyworks datasheet or ClockBuilder Pro tool, as this determines the exact pin assignments and functional behavior. Confirm package availability and moisture sensitivity level (MSL) requirements prior to PCB assembly planning.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with zero ppm error. Ensure the design utilizes the appropriate output driver format (e.g., LVDS for high speed, CMOS for lower speed) and verify that the input reference signal matches the supported frequency ranges (10–350 MHz for digital inputs).

Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'B' variant typically denotes specific performance characteristics within the series, while the alphanumeric suffix indicates a custom factory-programmed configuration. It serves as a replacement for multiple discrete clock oscillators and buffers in complex digital systems.

Replacement Considerations

Direct replacements require matching the specific frequency plan and pin configuration. Other Si5335 variants may share the same package but differ in electrical specs or default configurations; verify compatibility using the manufacturer's selection guide.