SI52112-B6-GM2

Overview

The SI52112-B6-GM2 is a dual-output PCIe clock generator from Skyworks Solutions, designed for PCI-Express Gen 1, Gen 2, and Gen 3 common clock applications. It sources two HCSL differential clocks from a 25 MHz crystal or clock input. The device supports 0.5% down spread spectrum modulation for EMI reduction and operates on a 3.3 V supply with a maximum current of 17 mA. It features a 10-pin TDFN package (3 x 3 mm) and an extended operating temperature range of –40 to +85 °C.

Feature Summary

• PCIe Gen 1, Gen 2, and Gen 3 common clock compliant
• Gen 3 SRNS compliant
• Supports 0.5% triangular spread spectrum profile
• Low power HCSL differential output buffers

Applications

• Network attached storage
• Multi-function printer
• PCIe Add-on Cards
• Network Interface Cards
• Wireless access point

Procurement Notes

Verify the ordering suffix GM2 corresponds to the 10-pin TDFN package configuration. Confirm RoHS compliance and lead-free status as specified in the manufacturer's ordering guide. Ensure the design accommodates the specific thermal dissipation requirements for the 10-pin TDFN footprint during procurement planning.

Selection Notes

Select this model over the B5 variant when spread spectrum functionality is required for EMI mitigation. Verify that the application requires the 10-pin TDFN form factor rather than the smaller 8-pin TDFN or TSSOP options. Ensure the system design supports the 3.3 V ± 5% operating voltage range and utilizes a 25 MHz reference source.

Part Context

This component belongs to the Si52112-B5/B6 family of high-performance PCIe clock generators. The B6 designation specifically indicates support for spread spectrum outputs, distinguishing it from the non-spread B5 series. Both variants share identical electrical specifications and pinouts within their respective package types.

Replacement Considerations

The SI52112-B5-GM2 serves as a direct functional substitute if spread spectrum capability is not needed. Other package variations such as the SI52112-B6-GM3 (8-pin TDFN) or SI52112-B6-GT (8-pin TSSOP) offer alternative footprints but require schematic and layout modifications.