SI53208-A01AGMR

Overview

The SI53208-A01AGMR is an 8-output PCIe clock fanout buffer from Skyworks Solutions, designed for Gen 1 through Gen 6 compliance. 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 internal 100 Ω or 85 Ω impedance matching. Key electrical specifications include a maximum additive jitter of 0.02 ps rms for Gen 6 applications and a typical dynamic supply current of 42 mA at 1.5 V. It is housed in a compact 48-pin QFN (6 x 6 mm) package.

Feature Summary

• 8-output 100 MHz PCIe Gen 1 through Gen 6 compliant clock fanout buffer
• Low additive jitter of 0.02 ps rms max for Gen 6 specifications
• Internal 100 Ω or 85 Ω output impedance matching eliminates external termination resistors
• Spread spectrum tolerant to pass through spread input clocks for EMI reduction

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pin compatibility and package dimensions. Confirm RoHS-6 compliance status and Pb-free certification requirements prior to integration. Ensure the design supports the required 1.5 V to 1.8 V power supply rails and I2C control interface for proper configuration.

Selection Notes

Select this component when eight differential clock outputs are required for high-speed PCIe expansion slots or server backplanes. The adjustable slew rate allows optimization for different board designs and signal quality requirements. Verify that the application environment falls within the –40 °C to 85 °C operating temperature range.

Part Context

This part belongs to the Si532xx family, which includes the Si53212 (12-output) and Si53204 (4-output). All variants share identical core functionality, power specifications, and jitter performance profiles. The selection between these models depends strictly on the number of differential clock outputs needed for the target system architecture.

Replacement Considerations

The Si53212-A01AGMR and Si53204-A01AGMR are direct functional replacements within the same family, differing only in output count and package size. Cross-model substitution requires verification of PCB footprint compatibility due to the 64-pin and 32-pin QFN variations.