SI52212-A01AGMR

Overview

The Si52212-A01AGMR 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 parameters include a maximum RMS jitter of 0.085 ps, an operating temperature range of –40 °C to +85 °C, and a 64-pin QFN (9 x 9 mm) package. It supports triangular spread spectrum modulation for EMI reduction and features individual hardware or I²C controls for output enablement and frequency selection.

Feature Summary

• Twelve 100 MHz LP-HCSL differential outputs compliant with PCIe Gen 1/2/3/4/5/6/7 specifications.
• Low jitter performance with a maximum RMS value of 0.085 ps to meet PCIe Gen 6 requirements.
• Integrated internal 100 Ω or 85 Ω line matching termination to eliminate external resistors.
• Flexible control via individual hardware pins or I²C interface 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 ordering suffix against the manufacturer's current documentation to confirm packaging details, such as reel quantities or tray configurations. Ensure that the required power supply voltages and thermal management strategies align with the system design constraints before finalizing procurement.

Selection Notes

Select this component when a high port count of twelve differential clocks is required for multi-lane PCIe architectures. Consider the integrated impedance matching and adjustable slew rate features to simplify PCB layout. Verify that the 1.5 V to 1.8 V supply voltage range matches the target platform's power delivery network.

Part Context

The Si52212 is part of the Si522xx family, which includes the Si52208 (8 outputs), Si52204 (4 outputs), and Si52202 (2 outputs). All members share similar architectural features, including LP-HCSL drivers and I²C configurability, but differ in output count and package size. The Si52212 utilizes the largest 64-pin QFN package within this series.

Replacement Considerations

Direct replacements within the same family include the Si52208, Si52204, and Si52202, provided the application can accommodate fewer outputs. Cross-family substitution requires verification of pin compatibility and electrical specifications.