SI5338A-B02426-GM

Overview

The SI5338A-B02426-GM 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 operates with a core supply of 1.8 V, 2.5 V, or 3.3 V and accepts flexible inputs such as external crystals (8–30 MHz), CMOS (up to 200 MHz), or differential clocks (up to 710 MHz). It features low phase jitter of 0.7 ps RMS typical, glitchless frequency adjustments via I2C/SMBus, and spread spectrum capabilities.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Supports highly configurable output drivers for up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Flexible input reference options including external crystal, CMOS, SSTL/HSTL, and differential inputs.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and shipping configuration. Ensure compatibility with the required I2C bus voltage levels, as the device supports standard and fast mode operations across different supply voltages. Confirm that the design accounts for the specified operating temperature range of –40 to +85 °C.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single source. Ensure the target output format (LVPECL, LVDS, etc.) matches the load requirements. Verify that the input reference frequency falls within the supported ranges for the chosen configuration. Consider the power consumption implications of the selected output driver types and frequencies.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'A' in the model number typically denotes the high-performance variant capable of supporting higher output frequencies up to 710 MHz for certain formats. The 'B' indicates the specific revision or binning, while 'GM' specifies the 24-lead QFN package.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants with compatible pinouts and electrical characteristics. When substituting, verify that the replacement part supports the required output frequencies and formats. Check for any differences in programming registers or NVM configuration if migrating between different revisions of the Si5338 series.