SI52111-B6-GM2

Overview

The SI52111-B6-GM2 is a single-output PCIe clock generator from Skyworks Solutions, designed to source one PCIe clock output from a 25 MHz crystal or clock input. It complies with PCIe Gen 1, Gen 2, Gen 3, Gen 3 SRNS, and Gen 4 common clock specifications. The device features a low-power HCSL differential output buffer and supports Serial-ATA at 100 MHz without requiring termination resistors. It operates on a 3.3 V supply with an operating current of 13 mA and utilizes a 10-pin TDFN (3x3 mm) package.

Feature Summary

• PCIe Gen 1, Gen 2, Gen 3, Gen 3 SRNS, and Gen 4 common clock compliant
• Supports 0.5% down spread spectrum for maximum EMI reduction
• Low power HCSL differential output buffer with no termination resistors required
• Extended temperature range: –40 to 85 °C

Applications

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

Procurement Notes

Verify the ordering suffix 'GM2' corresponds to the 10-pin TDFN package and RoHS6 compliance. Confirm that the '-B6' designation indicates the inclusion of 0.5% triangular spread spectrum functionality, which distinguishes it from the non-spread B5 variant. Ensure the extended temperature rating (-40 to 85 °C) meets system requirements.

Selection Notes

Select the SI52111-B6-GM2 when PCIe Gen 4 compliance and spread spectrum capabilities are required in a compact form factor. This model is suitable for applications needing a single differential output driven by a 25 MHz reference. Compare against the SI52111-B5-GM2 if spread spectrum is not needed, as the B5 variant lacks this feature.

Part Context

The SI52111-B6-GM2 belongs to the Si52111 family of PCIe clock generators. It shares the same physical footprint and basic electrical characteristics with the SI52111-B5-GM2, differing primarily in the support for 0.5% down spread spectrum outputs. Both variants utilize the same 10-pin TDFN package and operate at 3.3 V.

Replacement Considerations

The SI52111-B5-GM2 serves as a direct pin-compatible alternative if spread spectrum functionality is not required. Verify that the replacement part number matches the specific package type (TDFN-10) and temperature grade.