SI52202-A02AGMR

Overview

The Si52202-A02AGMR is a two-output PCIe clock generator from Skyworks Solutions, designed for 1.5 V to 1.8 V applications supporting PCIe Gen 1 through Gen 7 and SRIS architectures. It provides two 100 MHz differential LP-HCSL outputs compliant with common clock and separate reference specifications. The device features individual hardware control pins and I²C interfaces for output enable, spread spectrum selection (0.25% or 0.5%), and frequency configuration. It includes internal impedance matching options of 100 Ω or 85 Ω to eliminate external resistors. The component operates within an extended temperature range of –40 °C to 85 °C and utilizes a compact 20-pin QFN package.

Feature Summary

• Two-output LP-HCSL clock generator compliant with PCIe Gen 1/2/3/4/5/6/7 specifications
• Integrated hardware control pins and I²C support for output enable, spread spectrum, and frequency select
• Internal 100 Ω or 85 Ω line matching eliminates external termination resistors
• Low jitter performance of 0.085 ps (RMS) max, meeting PCIe Gen 6 requirements

Applications

• Servers
• Storage systems
• Data centers
• PCIe add-on cards
• Network Interface Cards (NICs)

Procurement Notes

Verify the specific internal termination resistance required by the design, as the A02 suffix typically denotes 85 Ω matching. Confirm the package variant matches the 20-pin QFN footprint. Ensure the input clock source aligns with the 25 MHz crystal or clock input specification. Check for RoHS compliance documentation if environmental regulations apply to the target assembly.

Selection Notes

Select this model when only two differential PCIe clock outputs are needed, optimizing board space compared to higher-output family members. Verify that the fixed 100 MHz output frequency meets system requirements, as other frequencies require factory consultation. Ensure the design accommodates the separate VDD and VDD_IO power supply rails ranging from 1.5 V to 1.8 V and 1.05 V to 1.8 V respectively.

Part Context

The Si52202 is part of the Si522xx family, which also includes the Si52212 (12 outputs), Si52208 (8 outputs), and Si52204 (4 outputs). All devices share similar architectural features, including LP-HCSL drivers and I²C configurability, but differ in pin count and output capacity. The Si52202 specifically targets applications requiring minimal footprint with dual-channel PCIe timing.

Replacement Considerations

Direct replacements within the same family include Si52202-A01AGMR, which differs primarily in internal termination resistance (100 Ω vs. 85 Ω). Other family members like Si52204 or Si52208 provide additional outputs but require different footprints and pin configurations.