SI52111-B6-GM2R

Overview

The SI52111-B6-GM2R is a single-output PCIe clock generator from Skyworks Solutions, designed to source one compliant PCIe clock output from a 25 MHz crystal or clock input. It supports PCIe Gen 1 through Gen 4 common clock specifications and includes Gen 3 SRNS compliance. The device features a low-power HCSL differential output buffer operating at 100 MHz with a typical supply current of 13 mA. It utilizes a 10-pin TDFN (3x3 mm) package and operates within an extended temperature range of –40 °C to +85 °C.

Feature Summary

• PCIe Gen 1, Gen 2, Gen 3, and Gen 4 common clock compliant
• Gen 3 SRNS Compliant
• Supports 0.5% down spread spectrum for EMI reduction
• Low power consumption (13 mA typical)

Applications

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

Procurement Notes

Verify the 'GM2R' suffix indicates tape and reel packaging for the 10-pin TDFN variant. Confirm the 'B6' designation ensures the inclusion of 0.5% triangular spread spectrum functionality, which distinguishes it from the non-spread B5 version. Ensure the extended temperature rating (-40 to 85 °C) matches system requirements.

Selection Notes

Select this component when a single differential PCIe clock output is required for Gen 1 through Gen 4 systems. The B6 variant is necessary if spread spectrum modulation is needed for EMI mitigation. Verify that the 3.3 V supply voltage and 10-pin TDFN footprint align with the target PCB layout constraints.

Part Context

This part belongs to the Si52111-B5/B6 family of Tiny Clock PCIe generators. The B6 sub-series specifically enables 0.5% down spread outputs, whereas the B5 sub-series does not support spread spectrum. Both variants share identical electrical characteristics except for the spread spectrum capability.

Replacement Considerations

The SI52111-B5-GM2R serves as a functional substitute if spread spectrum modulation is not required by the design. Other members of the Si52111 family may offer different pinouts or output configurations.