SI5338C-B06043-GM

Overview

The SI5338C-B06043-GM is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on 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.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Independent output voltage per driver selectable at 1.5, 1.8, 2.5, or 3.3 V.
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps resolution.

Applications

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

Procurement Notes

Verify the specific factory configuration code B06043 against the official Skyworks ordering guide to ensure correct pre-programmed frequencies and settings. Confirm package type is 24-QFN (4x4 mm) and check RoHS compliance status for the GMR suffix. Ensure I2C pull-up voltages match the system design requirements.

Selection Notes

Select this component when replacing multiple crystal oscillators with a single programmable source. Ensure the required output signal formats (LVPECL, LVDS, etc.) and frequencies fall within the specified ranges. Verify that the system can accommodate the 45 mA typical core supply current and provides adequate thermal dissipation for the QFN package.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates a specific factory configuration, while 'B' denotes the revision or option set. The 'GMR' suffix typically signifies tape and reel packaging. It is designed to replace discrete oscillators and reduce board space in high-performance digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory configurations (e.g., SI5338C-Bxxxxx-GM). Ensure the replacement part has the identical I2C programming map and output drive strengths if swapping without reprogramming.

FAQ

What is the maximum input frequency supported by the SI5338?

The device supports differential inputs up to 710 MHz, SSTL/HSTL inputs up to 350 MHz, and CMOS inputs up to 200 MHz.

Can the SI5338 generate glitch-free frequency changes?

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

What output formats are supported?

The outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats, with independent voltage levels per driver.