SI53204-A02AGM

Overview

The Skyworks Si53204-A02AGM is a 4-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 adjustable output slew rates. It is housed in a compact 32-pin QFN (5 x 5 mm) package.

Feature Summary

• Supports PCIe Gen 1 through Gen 6 common clock and separate reference clock specifications
• Low additive jitter of 0.02 ps rms maximum at Gen 6 speeds
• Individual hardware control pins and I2C controls for per-output enable/disable
• Spread spectrum tolerant to pass through spread input clocks for EMI reduction

Applications

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

Procurement Notes

Verify the specific ordering suffix against the official Skyworks datasheet to confirm package type and termination requirements. Confirm that the intended application voltage aligns with the 1.5 V to 1.8 V operating range. Ensure PCB layout accounts for the 32-pin QFN thermal pad connection to ground for proper operation.

Selection Notes

Select this component when a 4-channel fanout buffer is required for high-speed PCIe interfaces up to Gen 6. Consider the 32-pin QFN footprint if board space is limited. Verify that the input clock frequency falls within the 10 MHz to 200 MHz range and that the system power supply matches the 1.5 V or 1.8 V nominal options.

Part Context

This part belongs to the Si532xx family, which includes the Si53212 (12-output) and Si53208 (8-output). All variants share identical core performance characteristics, including jitter specs and input/output capabilities, differing primarily in the number of available differential output pairs and the corresponding package size.

Replacement Considerations

Direct pin-compatible replacements within the same family include the Si53208 and Si53212, provided additional unused outputs are managed via their respective enable pins. Cross-family substitution requires verification of package dimensions and pin assignments.