SI52212-A02AGMR

Overview

The Si52212-A02AGMR is a 12-output PCIe clock generator supporting Gen 1 through Gen 7 specifications. It operates on a 1.5 V to 1.8 V supply and provides twelve 100 MHz differential LP-HCSL outputs alongside one 25 MHz LVCMOS reference clock. The device features internal 85 Ω line matching, adjustable output slew rates, and individual hardware or I²C controls for output enablement and spread spectrum modulation. Designed for low power consumption with a maximum RMS jitter of 0.085 ps, it is housed in a 64-pin QFN package suitable for high-density server and data center applications.

Feature Summary

• Generates twelve 100 MHz differential LP-HCSL outputs compliant with PCIe Gen 1/2/3/4/5/6/7 standards.
• Includes one non-spread 25 MHz LVCMOS reference clock output for driving ASICS or SoCs.
• Features internal 85 Ω impedance matching to eliminate external termination resistors.
• Supports triangular spread spectrum (0.25% or 0.5%) via hardware pins or I²C for EMI reduction.

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 and RoHS compliance status. Ensure that the required internal termination value matches the design requirements, as other variants in the family may offer different impedance options. Confirm availability and lead times directly with authorized distributors, as stock levels fluctuate.

Selection Notes

Select this component when a high port count of twelve differential clocks is required for PCIe Gen 1 through Gen 7 architectures. The integrated 85 Ω termination simplifies PCB layout by removing external resistors. Verify that the system design can accommodate the separate VDD and VDD_IO power supplies, which range from 1.5 V to 1.8 V and 1.05 V to 1.8 V respectively, to ensure proper signal integrity and power management.

Part Context

This device belongs to 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 control capabilities, but differ in output count and package size. The Si52212 specifically utilizes a 64-pin QFN package to support its twelve differential output pairs.

Replacement Considerations

Si52212-A02AGM