SI53204-A02AGMR

Overview

The Skyworks Si53204-A02AGMR 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 additive jitter, with a maximum of 0.02 ps rms for Gen 6 compliance. Outputs are HCSL-compatible differential pairs with selectable internal termination of 85 Ω or 100 Ω. It features individual hardware output enable pins and I2C control, 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 100 MHz output frequency
• Internal 85 Ω or 100 Ω output impedance matching eliminates external resistors
• Individual hardware OE_b pins and I2C interface for per-output power management

Applications

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

Procurement Notes

Verify the specific A02AGMR suffix configuration against the official datasheet to ensure correct pinout and termination settings. Confirm that the 32-pin QFN footprint matches the PCB layout requirements. Check for moisture sensitivity level (MSL) ratings if reflow soldering is planned. Ensure the design supports the required 1.5 V to 1.8 V power domain.

Selection Notes

Select this component when four differential PCIe clock outputs are required for Gen 1 to Gen 6 interfaces. The Si53204 is suitable for space-constrained designs due to its small 32-pin QFN package. Consider the Si53208 or Si53212 if eight or twelve outputs are needed respectively. Verify that the input clock frequency falls within the 10 MHz to 200 MHz range.

Part Context

This part belongs to the Si532xx family, which includes the Si53212 (12 outputs) and Si53208 (8 outputs). All variants share identical electrical characteristics and functionality, differing only in the number of output channels and corresponding package sizes. The family is designed for high-performance PCIe clock distribution.

Replacement Considerations

Direct replacements within the same family include the Si53208 and Si53212, provided additional outputs are acceptable. Cross-family replacement requires verification of pin compatibility and electrical parameters.