SI5338C-B05602-GMR

Overview

The SI5338C-B05602-GMR is an I2C-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 a wide range of input references, including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs up to 710 MHz. Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats, supporting frequencies up to 710 MHz for differential and 200 MHz for CMOS. It operates on a single core supply of 1.8, 2.5, or 3.3 V, features low phase jitter of 0.7 ps RMS typical, and is housed in a compact 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four outputs with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical across various output formats.
• Flexible input support: External crystal (8–30 MHz), CMOS (5–200 MHz), and differential (up to 710 MHz).
• Configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL with independent voltage levels.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant timing.
• Ethernet switch/router clocking.
• Processor and FPGA clock generation.
• Broadcast video/audio timing systems.

Procurement Notes

Verify the specific B05602 suffix configuration against the official Skyworks ordering guide, as this code defines the factory-programmed frequency plan and output 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, 1.8, 2.5, or 3.3 V) match the load requirements. Verify that the input reference source falls within the supported frequency ranges for the desired output format.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The 'C' in the model number typically denotes a specific output driver capability or frequency range variant within the broader Si5338 portfolio, while the alphanumeric suffix specifies the pre-programmed clock configuration.

Replacement Considerations

Direct replacements must be sought from the Si5338 family. Other variants such as SI5338A, SI5338F, or SI5338J may offer different maximum input/output frequencies or jitter specifications. Verify pinout compatibility and software configuration via ClockBuilder Pro before substitution.

FAQ

What is the maximum input frequency supported by the SI5338?

The device supports differential inputs up to 710 MHz, CMOS inputs up to 200 MHz, and external crystals between 8 and 30 MHz.

Can the SI5338 generate glitchless frequency adjustments?

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

What programming interface does the SI5338 use?

The device is programmable via an I2C/SMBus-compatible serial interface, which can be configured using Skyworks' ClockBuilder Pro software.