SI5338C-B05034-GMR

Overview

The SI5338C-B05034-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended outputs with frequencies up to 710 MHz. The device operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I²C/SMBus interface, allowing for flexible input references including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independent output voltage per driver selectable at 1.5, 1.8, 2.5, or 3.3 V.

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4 systems
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05034 against the system requirements using Skyworks ClockBuilder Pro software. Confirm that the QFN-24 package dimensions and thermal characteristics align with the PCB land pattern recommendations. Ensure the I2C pull-up voltages are compatible with the selected core supply voltage.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. Verify that the required output formats (LVPECL, LVDS, HCSL, CMOS, etc.) and voltage levels match the available driver configurations. Check that the input reference frequency falls within the supported ranges for the chosen input type.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates a specific factory configuration, while 'GMR' denotes the tape-and-reel packaging format. The device replaces discrete oscillators and frequency translators, consolidating timing functions into a space-saving 4x4 mm QFN package.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory configurations (e.g., SI5338C-Bxxxxxx-GMR). When substituting, ensure the new part's pre-programmed frequencies and output formats meet the design specifications, as the internal configuration differs between suffixes.