SI52112-B3-GM2R

Overview

The SI52112-B3-GM2R is a dual-output PCIe clock generator from Skyworks Solutions, designed for PCI-Express Gen 1 and Gen 2 compliance. It sources two differential HCSL clocks from a 25 MHz crystal or clock input, operating at a maximum frequency of 100 MHz. The device features low power consumption with an operating supply current of 17 mA at 3.3 V. It utilizes a 10-pin TDFN package (3x3 mm) and supports an extended temperature range of –40 to 85 °C. Unlike the B4 variant, this model does not support spread spectrum outputs.

Feature Summary

• PCIe Gen 1 and Gen 2 compliant dual-output clock generation
• Low power HCSL differential output buffers requiring no termination resistors
• Supports Serial-ATA (SATA) at 100 MHz
• Accepts 25 MHz crystal or clock input

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 in tape and reel format. Confirm that the specific revision matches the required RoHS6 and lead-free specifications. Ensure the design accommodates the extended temperature range requirements if operating outside commercial limits.

Selection Notes

Select the SI52112-B3-GM2R when PCIe Gen 1 or Gen 2 compliance is sufficient and spread spectrum functionality is not required. For applications needing spread spectrum, consider the SI52112-B4 series. Verify that the 10-pin TDFN footprint fits the PCB layout constraints and that the 3.3 V supply voltage aligns with system power rails.

Part Context

This component belongs to the Si52112-B3/B4 family of Tiny Clock PCIe clock generators. The -B3 designation specifically indicates the absence of spread spectrum capabilities, distinguishing it from the -B4 variant which offers 0.5% down spread. It serves as a compact timing solution for embedded systems requiring reliable PCIe clocking.

Replacement Considerations

For direct functional replacement without spread spectrum, use SI52112-B3-GM2 (tube packaging). If spread spectrum is acceptable, SI52112-B4-GM2R provides equivalent performance with added EMI reduction features. For higher speed requirements, consider the Si52112-B5 or B6 series for PCIe Gen 3 support.