SI52204-A01AGM

Overview

The Skyworks SI52204-A01AGM is a four-output PCI Express clock generator supporting Gen 1 through Gen 7 and SRIS architectures. It provides four 100 MHz differential LP-HCSL outputs and one 25 MHz LVCMOS reference clock. 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 internal 85 Ω or 100 Ω line matching. Outputs are individually controllable via hardware pins or I²C for enable, spread spectrum, and frequency selection.

Feature Summary

• Four differential PCIe clock outputs compliant with Gen 1/2/3/4/5/6/7 specifications
• Low jitter performance of 0.085 ps (RMS) max
• Integrated LP-HCSL output drivers with adjustable slew rate
• Individual hardware control pins and I²C support 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 A01AGM ordering suffix against the official Skyworks datasheet to confirm exact factory configuration and package details. Confirm RoHS compliance status and lead times directly with authorized distributors or Skyworks sales representatives prior to procurement.

Selection Notes

Select the SI52204 when four differential PCIe clock outputs are required. Ensure the design supports the 1.5 V to 1.8 V main supply and separate VDD_IO voltage. Verify that the 0.085 ps jitter specification meets the target PCIe generation requirements. Check board space constraints against the 32-pin QFN package dimensions.

Part Context

The SI52204 belongs to the Si522xx family, which includes the Si52212 (12 outputs), Si52208 (8 outputs), and Si52202 (2 outputs). All devices share similar architectural features, including LP-HCSL drivers and I²C configurability, but differ in output count and package size.

Replacement Considerations

The Si52208 and Si52212 offer higher output counts but require larger packages. The Si52202 provides only two outputs. Direct pin-to-pin replacement within the same family is not possible due to differing pinouts and output counts.