SI52212-A01AGM

Overview

The Si52212-A01AGM is a high-performance, low-power clock generator from the Si522xx family, designed for PCIe Gen 1 through Gen 7 and SRIS applications. It provides twelve 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 specifications include a maximum RMS jitter of 0.085 ps, an operating temperature range of –40 °C to +85 °C, and a QFN-64 package (9 x 9 mm). It supports spread spectrum modulation for EMI reduction and features individual hardware or I2C control for output enablement and frequency selection.

Feature Summary

• Twelve 100 MHz differential LP-HCSL outputs compliant with PCIe Gen 1/2/3/4/5/6/7 common clock and SRIS architectures.
• Low jitter performance with a maximum RMS value of 0.085 ps, meeting PCIe Gen 6 specifications with design margin.
• Integrated internal 100 Ω line matching termination eliminates external resistors.
• Individual hardware control pins and I2C interface for output enable, spread spectrum enable, and frequency select functions.

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 pinout compatibility and packaging type. The 'AGM' suffix typically denotes a tray package in the QFN-64 form factor, whereas 'AGR' variants may indicate reel packaging. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to ensure adherence to assembly standards.

Selection Notes

Select the Si52212-A01AGM when a high port count of twelve differential clocks is required for complex PCIe topologies. Ensure the design accommodates the 1.5 V to 1.8 V power supply range and the separate VDD_IO rail. Verify that the board layout supports the 64-pin QFN footprint and thermal requirements, specifically connecting the exposed ground pad for proper operation.

Part Context

The Si52212-A01AGM belongs to the Si522xx family, which includes the Si52208 (8 outputs), Si52204 (4 outputs), and Si52202 (2 outputs). All members share similar functional blocks, including PLL architecture and control interfaces, but differ in output count and package size. This family is optimized for low power consumption and small footprint in industrial and consumer applications.

Replacement Considerations

Direct replacements within the same family include the Si52208-A01AGM for reduced output counts. Cross-family substitution requires verification of voltage levels, package dimensions, and jitter specifications. Consult Skyworks Solutions for updated part numbers if discontinuance notices are issued.