SI53208-A01AGM

Overview

The Skyworks SI53208-A01AGM is an 8-output PCIe clock fanout buffer supporting Gen 1 through Gen 6 specifications. It operates on a single 1.5 V to 1.8 V supply and accepts input frequencies from 10 MHz to 200 MHz. The device provides low-power, push-pull HCSL-compatible differential outputs with an internal 100 Ω or 85 Ω output impedance matching. Key electrical parameters include a maximum additive jitter of 0.02 ps rms for Gen 6 compliance and a typical dynamic supply current of 44 mA at 1.8 V. It features adjustable slew rates and individual hardware or I2C-controlled output enables.

Feature Summary

• 8-output low jitter buffer compliant with PCIe Gen 1 through Gen 6 common clock and separate reference clock specifications
• Low additive jitter of 0.02 ps rms max, meeting stringent Gen 6 requirements
• Internal 100 Ω or 85 Ω output impedance matching eliminates external termination resistors
• Individual hardware control pins and I2C controls allow independent enable/disable of each differential output

Applications

• Data centers
• Servers
• Storage systems
• PCIe add-on cards
• Communications equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape-and-reel configuration. Ensure that any custom programming codes associated with the suffix match the required design specifications before procurement.

Selection Notes

Select this component when eight differential clock outputs are required for high-speed PCIe interfaces. The Si53208 fits designs needing spread spectrum tolerance and Intel QPI/UPI support within a compact 48-pin QFN (6 x 6 mm) footprint compared to the 12-output Si53212.

Part Context

This part belongs to the Si532xx family, which includes the 12-output Si53212 and the 4-output Si53204. All variants share identical core performance characteristics, including power supply ranges and jitter specifications, differing primarily in output count and physical package dimensions.

Replacement Considerations

The Si53212-A01AGM serves as a higher-density alternative offering 12 outputs in a 64-pin QFN. For lower pin count requirements, the Si53204-A01AGM provides 4 outputs in a 32-pin QFN.