SI52202-A01AGM

Overview

The Si52202-A01AGM is a two-output PCI Express clock generator supporting Gen 1 through Gen 7 and SRIS architectures. It provides two 100 MHz differential LP-HCSL outputs compliant with PCIe common clock and separate reference specifications. The device operates on a 1.5 V to 1.8 V supply with separate VDD and VDD_IO rails. Key electrical parameters include a maximum RMS jitter of 0.085 ps, an operating temperature range of –40 °C to +85 °C, and a 20-pin QFN (3 x 3 mm) package. It accepts a 25 MHz crystal or clock input.

Feature Summary

• Two-output LP-HCSL clock generator compliant with PCIe Gen 1/2/3/4/5/6/7 and SRIS
• Low jitter performance of 0.085 ps (RMS) max for PCIe Gen 6 design margin
• Internal 100 Ω or 85 Ω line matching eliminates external resistors
• Individual hardware control pins and I2C controls for output enable, spread spectrum, and frequency select

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and termination resistance values. Confirm RoHS compliance status via the official Certificate of Conformance. Ensure the selected variant matches the required internal impedance termination for the target PCB trace design.

Selection Notes

Select this component for designs requiring only two differential PCIe clock outputs in a minimal footprint. The Si52202 utilizes a 20-pin QFN package, which is the smallest in its family. Verify that the application does not require the Wake-on LAN power-down feature, as this function is explicitly excluded for the Si52202 model compared to higher-output variants.

Part Context

The Si52202 belongs to the Si522xx family, which also includes the Si52212 (12 outputs), Si52208 (8 outputs), and Si52204 (4 outputs). While sharing similar core PLL and control features, the Si52202 is distinct in offering only two differential outputs and lacking the LVCMOS reference clock output found in other family members.

Replacement Considerations

Direct functional replacements within the same package are limited due to the unique pinout of the 20-pin QFN. Higher-output variants like the Si52204 or Si52208 require significant schematic and layout modifications. Consult Skyworks Solutions for specific cross-reference recommendations.