SI52111-B4-GM2R

Overview

The SI52111-B4-GM2R is a single-output PCIe Gen 1 and Gen 2 compliant clock generator manufactured by Skyworks Solutions. It sources one differential HCSL output from a 25 MHz crystal or clock input, supporting Serial-ATA at 100 MHz without requiring termination resistors. The device features a triangular spread spectrum profile with a -0.5% down spread range to reduce EMI. Operating on a 3.3 V supply with a typical current of 13 mA, it utilizes a 10-pin TDFN (3x3 mm) package and supports an extended operating temperature range of –40 to +85 °C.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant single-output clock generation
• -0.5% triangular spread spectrum for EMI reduction
• Low power consumption with 13 mA typical operating current
• HCSL differential output buffer requiring no external termination

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 that the B4 designation ensures the inclusion of the 0.5% spread spectrum feature, as the B3 version lacks this capability. Check for RoHS6 compliance and lead-free status in the specific order documentation.

Selection Notes

Select the SI52111-B4-GM2R when spread spectrum modulation is required for EMI mitigation in PCIe designs. Use the SI52111-B3-GM2R if spread spectrum is not needed. For applications requiring PCIe Gen 3 support, consider the SI52111-B5/B6 series instead. Ensure the design accommodates the 10-pin TDFN footprint dimensions.

Part Context

This component belongs to the Si52111-B3/B4 family of high-performance PCIe clock generators. The B4 variant specifically adds the 0.5% down spread functionality compared to the non-spread B3 model. Both share identical electrical characteristics, pinouts, and package options, differing only in the spread spectrum configuration.

Replacement Considerations

The SI52111-B3-GM2R serves as a direct functional substitute if spread spectrum is unnecessary. For higher-speed requirements, the SI52111-B5-GM2R provides PCIe Gen 3 compliance while maintaining similar form factors.