SI52144-A01AGM

Overview

The SI52144-A01AGM is a quad-output PCIe clock generator supporting Gen 1, Gen 2, Gen 3, and Gen 4 common clock standards. It operates on a 3.3 V supply within an industrial temperature range of -40 to 85 °C. The device provides four differential HCSL outputs with a maximum frequency of 100 MHz. Key electrical specifications include a cycle-to-cycle jitter of 50 ps (max) for PCIe Gen 1 and phase jitter of 0.6 ps (max) for Gen 3/4. It accepts a 25 MHz crystal or clock input and features hardware output enable pins alongside I2C programmability.

Feature Summary

• Supports PCIe Gen 1, Gen 2, Gen 3, and Gen 4 common clock compliance
• Four low-power push-pull HCSL compatible differential outputs
• Hardware output enable pins and dedicated spread spectrum control pin
• I2C interface for dynamic skew, edge rate, and amplitude tuning

Applications

• Network attached storage
• Multi-function printer
• Wireless access point
• Routers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation. The 'GM' suffix indicates a 24-pin QFN package in an industrial temperature range (-40 to 85 °C). Confirm availability status as distribution channels may list discontinued or limited stock items. Ensure the required revision level matches the design requirements before procurement.

Selection Notes

Select this component when designing systems requiring four synchronized PCIe clocks up to Gen 4 speeds. It is suitable for applications needing signal integrity tuning via I2C or fixed hardware control. Ensure the system power supply is stable at 3.3 V ±5%. For designs requiring tape and reel packaging instead of trays, verify the 'GMR' suffix variant.

Part Context

This part belongs to the Skyworks Si52144 family of PCIe clock generators. It is designed to replace legacy clocking solutions by integrating spread-spectrum capabilities and multiple output enables into a single 24-pin QFN package. It serves as a central timing source for high-speed serial interfaces in enterprise and consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet.