SI52111-B5-GM2

Overview

The SI52111-B5-GM2 is a single-output PCIe clock generator manufactured by Skyworks Solutions, Inc. It sources one differential HCSL output at 100 MHz from a 25 MHz crystal or clock input. The device complies with PCIe Gen 1 through Gen 4 common clock specifications and supports Serial-ATA at 100 MHz. Operating on a 3.3 V supply, it draws a maximum of 13 mA. The component utilizes a 10-pin TDFN package (3x3 mm) 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
• Low power HCSL differential output buffer
• No termination resistors required
• Supports Serial-ATA (SATA) at 100 MHz

Applications

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

Procurement Notes

Verify the ordering suffix 'GM2' corresponds to the 10-pin TDFN package configuration. Confirm that the 'B5' designation indicates no spread spectrum support, as opposed to the B6 variant which provides 0.5% down spread. Ensure the extended temperature grade (-40 to 85 °C) matches the target application environment requirements.

Selection Notes

Select this component for designs requiring a single PCIe clock output without spread spectrum modulation. The B5 revision lacks the triangular spread spectrum profile found in the B6 version. Designers must account for the specific crystal loading capacitance (12–15 pF recommended) and ensure proper decoupling capacitors are placed near the VDD pins to maintain signal integrity.

Part Context

This part belongs to the Si52111-B5/B6 family of PCIe clock generators. The 'B5' suffix specifically denotes the non-spread spectrum variant, while 'B6' offers 0.5% down spread. Both variants share identical electrical characteristics except for the spread spectrum capability and are available in 10-pin TDFN and 8-pin TSSOP packages.

Replacement Considerations

The SI52111-B6-GM2 serves as a direct functional substitute if spread spectrum modulation is acceptable. Other members of the Si52111 family may offer different pinouts or output configurations and require careful verification against the datasheet before implementation.