SI5338B-B09440-GMR

Overview

The SI5338B-B09440-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 formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device accepts inputs up to 710 MHz via differential or single-ended sources. Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, with a typical operating current of 45 mA. It features low phase jitter of 0.7 ps RMS typ and operates within a temperature range of –40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis with zero ppm precision on four outputs.
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Configurable output drivers support LVPECL/LVDS/CML up to 710 MHz, HCSL up to 250 MHz, and CMOS/SSTL/HSTL up to 350 MHz.
• Features independent glitchless frequency adjustment in 1 ppm steps and phase adjustment with <20 ps accuracy.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant timing.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking systems.
• Broadcast video/audio timing distribution.
• Telecom line cards and MSAN/DSLAM/PON equipment.

Procurement Notes

Verify the specific factory configuration code B09440 against the official Skyworks ordering guide to ensure correct pinout and pre-programmed register settings. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. Ensure the required output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) match the load requirements. Use ClockBuilder Pro software to configure the I2C registers and validate jitter performance for the specific application bandwidth.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' designation typically refers to a specific factory programming configuration or silicon revision variant within the broader Si5338 product line, which shares the same physical package and general functional architecture.

Replacement Considerations

Direct replacements must be sought from the Si5338 family with matching factory codes. Verify compatibility with existing PCB land patterns and I2C addressing schemes before substituting other Skyworks clock generators.