SI52112-A1-GT

Overview

The SI52112-A1-GT is a dual-output PCIe Gen 1 clock generator manufactured by Skyworks Solutions. It sources two differential HCSL clocks from a 25 MHz crystal or clock input, supporting frequencies up to 100 MHz. The device operates on a 3.3 V supply with a maximum current of 17 mA and features an extended temperature range of –40 °C to +85 °C. Unlike the A2 variant, this model does not support spread spectrum outputs. It is housed in an 8-pin TSSOP package.

Feature Summary

• PCIe Gen 1 compliant dual-output clock generation
• Low power consumption (17 mA) with 3.3 V supply
• HCSL differential outputs without termination resistors
• Supports 25 MHz crystal or clock input

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status via official documentation. Check for product discontinuance notices as older revisions may be phased out. Ensure ordering suffixes match required packaging formats.

Selection Notes

Select the SI52112-A1-GT when spread spectrum functionality is unnecessary. Choose this part over the A2 variant if fixed frequency outputs are preferred. Verify that the 8-pin TSSOP package fits the target PCB layout constraints compared to the 10-pin TDFN option.

Part Context

This component belongs to the Si52112 family designed for PCI-Express Gen 1 applications. It serves as a low-power alternative to larger clock generators, targeting space-constrained embedded systems. The 'A1' designation specifically indicates the absence of spread spectrum modulation capabilities found in the 'A2' version.

Replacement Considerations

Skyworks recommends the SI52112-B6-GT as a replacement for newer PCIe generations.