SI52111-A2-GM2R

Overview

The SI52111-A2-GM2R is a single-output PCIe Gen 1 clock generator manufactured by Skyworks Solutions Inc. It sources one compliant differential clock output from a 25 MHz crystal or clock input. The device features low power HCSL differential outputs, supports Serial-ATA at 100 MHz, and includes a triangular spread spectrum profile for EMI reduction. It operates on a 3.3 V supply with an operating current of 13 mA. The component is housed in a 10-pin TDFN package (3x3 mm) and supports an extended temperature range of –40 to 85 °C.

Feature Summary

• PCIe Gen 1 compliant single-output clock generator
• Supports 25 MHz crystal or clock input
• Triangular spread spectrum profile (-0.5% down spread)
• Low power consumption (13 mA typical)

Applications

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

Procurement Notes

Verify the ordering suffix 'GM2R' corresponds to the 10-pin TDFN package supplied in tape and reel format. Confirm that the specific revision matches the required spread spectrum functionality, as the -A2 variant supports -0.5% down spread while the -A1 does not. Ensure compatibility with the specified 3.3 V supply voltage and extended temperature range requirements.

Selection Notes

Select this model when a single PCIe Gen 1 compliant clock output is required with integrated spread spectrum capabilities. The -A2 suffix indicates support for -0.5% down spread, which aids in EMI reduction. Choose the GM2R suffix if surface-mount assembly using tape and reel packaging is preferred over tube packaging. Verify that the 10-pin TDFN footprint fits the design constraints.

Part Context

This component belongs to the Si52111-A1/A2 family of PCI-E Xpress Gen 1 single output clock generators. The -A2 variant specifically enables spread spectrum functionality, whereas the -A1 variant does not. The 'GM2R' designation identifies the 10-pin TDFN package configuration delivered in tape and reel form factor for automated assembly processes.

Replacement Considerations

For PCIe Gen 2 applications, consider the Si52111-B3/B4 series. For PCIe Gen 3 applications, refer to the Si52111-B5/B6 series. Non-spread spectrum alternatives within the same package include the Si52111-A1-GM2R.