SI53212-A01AGM

Overview

The Skyworks SI53212-A01AGM is a 12-output PCIe clock fanout buffer designed for Gen 1 through Gen 6 compliance. It operates on a single 1.5 V to 1.8 V power supply and accepts input frequencies from 10 MHz to 200 MHz. The device provides low-power, push-pull HCSL-compatible differential outputs with an internal 100 Ω output impedance matching. Key electrical specifications include a maximum additive jitter of 0.02 ps rms for Gen 6 applications and a typical dynamic supply current of 61 mA at 1.8 V. It features adjustable slew rates and individual hardware or I2C-controlled output enables.

Feature Summary

• 12-output low jitter buffer compliant with PCIe Gen 1 through Gen 6 common clock and separate reference clock specifications
• Low additive jitter performance of 0.02 ps rms maximum for Gen 6 requirements
• Internal 100 Ω output impedance matching eliminates the need for external termination resistors
• Supports spread spectrum clocking pass-through for EMI reduction and Intel QPI/UPI standards

Applications

• Data centers
• Servers
• Storage systems
• PCIe add-on cards
• Industrial equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and internal termination values. Confirm that the required RoHS-6 compliance and Pb-free status match the project specifications. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability.

Selection Notes

Select this model when a 12-channel distribution is required for high-speed PCIe interfaces up to Gen 6. Compare against the Si53208 (8 outputs) or Si53204 (4 outputs) if fewer channels are sufficient. Verify that the system design utilizes a 100 Ω internal termination; otherwise, consider variants with different termination options. Ensure the operating temperature range of –40 °C to 85 °C meets environmental constraints.

Part Context

This component belongs to the Si532xx family, which includes the Si53208 and Si53204 models. These devices share identical functional architectures and electrical characteristics but differ in the number of available differential outputs. The Si53212 specifically provides the highest channel count within this low-jitter fanout buffer series.

Replacement Considerations

The Si53208 and Si53204 are functionally compatible alternatives within the same family, offering 8 and 4 outputs respectively. Direct pin-to-pin substitution requires verifying that the reduced output count meets the system design requirements.