SI5338D-B05045-GMR

Overview

The SI5338D-B05045-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with zero ppm frequency accuracy and low phase jitter of 0.7 ps RMS typical. The device supports flexible input references including external crystals (8 to 30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz. Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL, and CML formats across frequencies from 0.16 to 710 MHz. It operates on a single core supply of 1.8, 2.5, or 3.3 V within an operating temperature range of -40 to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly-configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL, and CML signal formats.
• Flexible input reference options including external crystal, CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.

Applications

• PCIe Gen 1/2/3/4 common clock generation
• Ethernet switch and router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the pre-programmed configuration file associated with this part number. Ensure that the I2C pull-up voltage requirements align with the system design if operating below 2.5 V. Confirm package dimensions match the recommended PCB land pattern for the 24-lead QFN form factor.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single source with high precision. Evaluate the output driver configurations to ensure compatibility with target load impedances and voltage levels. Consider the input reference availability, as the device supports various formats including differential and single-ended signals up to 710 MHz.

Part Context

This model belongs to the Si5338 family of I2C-programmable clock generators. The family utilizes patented MultiSynth technology to replace multiple discrete oscillators. Variations within the series typically differ by pre-programmed frequency plans, output configurations, and packaging options while sharing the same core architecture and electrical specifications.

Replacement Considerations

Direct replacements must be verified through Skyworks Solutions' official substitution tools. Cross-referencing requires matching the specific pre-programmed frequency plan and output format configuration rather than relying solely on generic electrical parameters.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports differential input frequencies up to 710 MHz. Single-ended CMOS inputs support up to 200 MHz, while SSTL/HSTL inputs support up to 350 MHz.

Can the output frequencies be adjusted without glitches?

Yes, the device features an independent frequency increment/decrement capability that allows glitchless frequency adjustments in 1 ppm steps.

What spread spectrum capabilities are available?

The Si5338 offers highly configurable spread spectrum on any output, supporting frequencies from 5 to 350 MHz, spreads from 0.5 to 5.0%, and modulation rates from 33 to 63 kHz.