SI52111-A1-GT

Overview

The Skyworks SI52111-A1-GT is a single-output PCIe Gen 1 clock generator housed in an 8-pin TSSOP package. It generates a 100 MHz differential HCSL output from a 25 MHz crystal or clock input, compliant with PCIe specifications. The device operates on a 3.3 V supply (2.97 V to 3.63 V) with a typical current of 13 mA. Unlike the A2 variant, it does not support spread spectrum modulation. Key electrical parameters include a cycle-to-cycle jitter of 70 ps and a long-term accuracy of 100 ppm.

Feature Summary

• PCIe Gen 1 compliant single-output clock generation
• HCSL differential output buffer requiring no termination resistors
• Supports 25 MHz crystal or direct clock input
• Extended operating temperature range (-40 °C to +85 °C)

Applications

• Network Attached Storage
• Multi-function Printer
• Wireless Access Point
• Routers

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as indicated in official documentation. Check for end-of-life notices or product discontinuance notifications prior to procurement planning.

Selection Notes

Select this model when spread spectrum functionality is not required. Compare against SI52111-A2 variants if EMI reduction via frequency spreading is needed. Ensure the 8-pin TSSOP footprint matches the PCB layout requirements.

Part Context

This part belongs to the Si52111-A1/A2 family designed for PCI-Express Gen 1 applications. It serves as a low-power alternative to larger packages like the 10-pin TDFN, offering a compact solution for embedded systems where space is constrained.

Replacement Considerations

For designs requiring spread spectrum capabilities, consider the SI52111-A2 series. For higher speed interfaces, evaluate the SI52111-B3/B4 (Gen 2) or SI52111-B5/B6 (Gen 3) models.