SI52204-A01BGMR

Overview

The Skyworks Si52204-A01BGMR 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 low jitter of 0.085 ps (RMS) maximum, ensuring compliance with PCIe Gen 6 requirements. It includes internal 85 Ω or 100 Ω line matching, adjustable slew rates, and spread spectrum capabilities for EMI reduction. Control is managed via hardware pins or I²C interface.

Feature Summary

• Four differential LP-HCSL outputs compliant with PCIe Gen 1/2/3/4/5/6/7 common clock and SRIS architectures
• Low jitter performance of 0.085 ps (RMS) maximum
• Internal 85 Ω or 100 Ω impedance matching eliminates external resistors
• Triangular spread-spectrum enable/disable for EMI reduction with 0.25% or 0.5% down-spread options

Applications

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

Procurement Notes

Verify the specific ordering suffix A01B against the manufacturer's current documentation to confirm pinout compatibility and internal termination settings. Confirm availability status as distribution data may vary. Ensure the design supports the required 1.5 V to 1.8 V power supply rails and I²C address configuration before procurement.

Selection Notes

Select this component when a compact four-channel PCIe clock solution is required for Gen 1 through Gen 7 applications. The Si52204 utilizes a 32-pin QFN package, optimizing board space compared to higher-output variants. Verify that the application requires LP-HCSL output drivers and that the 25 MHz LVCMOS reference output meets system timing needs.

Part Context

The Si52204 belongs to the Si522xx family, which includes the Si52212 (12 outputs), Si52208 (8 outputs), and Si52202 (2 outputs). This family shares common architectural features such as PLL control, spread spectrum functionality, and I²C support, differing primarily in output count and package size.

Replacement Considerations

Direct replacements within the same family include the Si52208 for eight outputs or the Si52202 for two outputs, depending on channel requirements. Cross-family substitution requires verification of voltage levels, output driver types, and package dimensions.