SI5335D-B11835-GM

Overview

The Skyworks SI5335D-B11835-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 flexible input references 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 features three pin-selectable device configurations, spread spectrum control, and loss-of-signal alarms in a 4x4 mm 24-QFN package.

Feature Summary

• Four independent outputs supporting any frequency up to 350 MHz with 0 ppm synthesis error
• Configurable output drivers for LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats
• Three independent, user-assignable, pin-selectable device configurations
• Low phase jitter of 0.7 ps RMS typical with selectable PLL loop bandwidths

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the B11835 suffix via the official datasheet or ClockBuilder Pro utility, as this determines the exact output frequencies and pin functions. Confirm supply availability through authorized distributors, as lead times may vary for customized silicon.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with low jitter. Ensure the input reference matches the supported formats (crystal, CMOS, or differential). Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) align with the load requirements. Use the ClockBuilder tool to generate the correct configuration file for the B11835 variant.

Part Context

The SI5335D-B11835-GM belongs to the Si5335 family of highly flexible clock generators. The 'D' indicates a specific revision or feature set within the series, while 'B11835' denotes a unique factory-programmed configuration. The '-GM' suffix specifies the RoHS-compliant 24-QFN package. This part replaces multiple discrete oscillators and buffers in complex digital systems.

Replacement Considerations

Direct replacement requires matching the specific frequency plan and pinout configuration. Generic Si5335 variants may have different default configurations; verify the exact output frequencies and control pin assignments against the original design specifications before substitution.