SI52204-A02BGM

Overview

The Skyworks Si52204-A02BGM is a four-output PCI Express clock generator supporting Gen 1 through Gen 7 specifications. It operates on a 1.5 V to 1.8 V supply and provides four 100 MHz differential LP-HCSL outputs alongside one 25 MHz LVCMOS reference clock. The device features internal 85 Ω line matching, adjustable output slew rates, and triangular spread spectrum for EMI reduction. Control is managed via individual hardware pins or I²C interface, allowing independent output enable/disable and frequency selection between 100 MHz, 133 MHz, and 200 MHz.

Feature Summary

• Four differential PCIe clock outputs compliant with Gen 1/2/3/4/5/6/7 standards
• Internal 85 Ω impedance matching eliminates external resistors
• Triangular spread spectrum (0.25% or 0.5%) for EMI reduction
• I²C control with readback capabilities and hardware pin overrides

Applications

• Servers
• Storage systems
• Data centers
• PCIe add-on cards
• Network Interface Cards (NICs)

Procurement Notes

Verify the specific ordering suffix 'A02BGM' against the official Skyworks datasheet to confirm package type, temperature range, and termination options. Ensure compatibility with system power sequencing and I²C address configurations before procurement.

Selection Notes

Select this component for designs requiring four low-jitter PCIe clocks with integrated termination. Confirm that the 1.5 V to 1.8 V supply voltage aligns with the target platform. Verify if the internal 85 Ω termination meets the PCB trace impedance requirements compared to standard 100 Ω options.

Part Context

This part belongs to the Si522xx family of high-performance PCIe clock generators. The Si52204 variant specifically offers four differential outputs in a compact 32-pin QFN package, distinguishing it from the two-output Si52202 and higher-port-count Si52208 and Si52212 models.

Replacement Considerations

Direct replacements within the same family include the Si52208 (8 outputs) or Si52202 (2 outputs), provided pinout and output count adjustments are acceptable. Cross-family substitutes require verification of jitter performance and output driver compatibility.