SI52112-B5-GM2R

Overview

The SI52112-B5-GM2R is a PCIe Gen 3 dual output clock generator manufactured by Skyworks Solutions. It sources two HCSL differential clocks from a 25 MHz crystal or clock input, supporting PCIe Gen 1, Gen 2, and Gen 3 common clock specifications. The device operates on a 3.3 V supply with a maximum current of 17 mA. Key electrical parameters include a typical cycle-to-cycle jitter of 28 ps and a long-term accuracy of 250 ppm. It lacks spread spectrum capabilities and is housed in a 10-pin TDFN package (3 x 3 mm) supplied in tape and reel format.

Feature Summary

• Dual HCSL differential outputs compliant with PCIe Gen 1, Gen 2, and Gen 3 common clock standards
• Supports 25 MHz crystal or clock input with no termination resistors required
• Low power consumption with a maximum operating supply current of 17 mA
• Extended temperature range operation from -40 °C to +85 °C

Applications

• PCIe Add-on Cards
• Network Interface Cards
• Network Attached Storage
• Multi-function Printers
• Wireless Access Points

Procurement Notes

Verify the ordering suffix 'GM2R' confirms the 10-pin TDFN package and tape and reel packaging configuration. Ensure the design requires the non-spread spectrum variant, as this specific part number does not support triangular spread spectrum modulation. Confirm that the application utilizes the extended temperature range rating of -40 °C to +85 °C.

Selection Notes

Select the SI52112-B6 series if triangular spread spectrum functionality is required for EMI reduction, as the B5 variant does not support this feature. Verify that the 10-pin TDFN footprint aligns with the PCB layout constraints. Ensure the system can accommodate the specified 250 ps long-term accuracy and 28 ps typical cycle-to-cycle jitter requirements.

Part Context

This component belongs to the Si52112-B5/B6 family of PCI-Express Gen 3 dual output clock generators. The 'B5' designation indicates the absence of spread spectrum outputs, distinguishing it from the 'B6' variant which supports 0.5% down spread. The 'GM2R' suffix specifies the 10-pin TDFN package type and tape and reel delivery method.

Replacement Considerations

Skyworks recommends the SI52112-B6-GM2R as a replacement for discontinued variants within the same package family. Note that the B6 replacement includes spread spectrum capabilities, which may require verification against original design EMI specifications.