SI52208-A01AGMR

Overview

The Si52208-A01AGMR is a low-power clock generator from the Si522xx family, designed for PCIe Gen 1 through Gen 7 and SRIS applications. It provides eight 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 and an operating temperature range of –40 °C to +85 °C. It features internal 100 Ω or 85 Ω line matching and supports triangular spread spectrum modulation for EMI reduction.

Feature Summary

• Eight 100 MHz differential LP-HCSL outputs compliant with PCIe Gen 1/2/3/4/5/6/7 specifications
• Low jitter performance of 0.085 ps (RMS) max to meet PCIe Gen 6 requirements
• Integrated hardware control pins and I2C interface for output enable, spread spectrum, and frequency selection
• Internal 100 Ω or 85 Ω impedance matching eliminates external resistors

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status via the Certificate of Conformance. Ensure the design accounts for the required humidity sensitivity handling procedures during assembly.

Selection Notes

Select the Si52208 when eight differential clock outputs are required for high-port-count designs. Compare power consumption metrics against the Si52212 (12-output) and Si52204 (4-output) variants to optimize board space and energy efficiency. Verify that the 1.5 V to 1.8 V supply voltage aligns with the target system architecture.

Part Context

This component belongs to the Si522xx family, which includes the Si52212, Si52204, and Si52202 models. These devices share common architectural features such as PLL control, memory, and I2C interfaces but differ in output count and package size. The Si52208 specifically utilizes a 48-pin QFN package to balance port density with footprint constraints.

Replacement Considerations

Direct functional replacements within the same family include the Si52212 (higher output count) and Si52204 (lower output count). Cross-family substitution requires verification of pin compatibility and electrical parameter alignment.