SI52112-A1-GM2

Overview

The SI52112-A1-GM2 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, operating at frequencies up to 100 MHz. The device requires a 3.3 V supply (2.97 V to 3.63 V) and draws 17 mA. It features cycle-to-cycle jitter of 70 ps maximum and long-term accuracy of 250 ppm. Unlike the A2 variant, this model does not support spread spectrum outputs. It is housed in a compact 10-pin TDFN package measuring 3x3 mm.

Feature Summary

• PCIe Gen 1 compliant with two differential HCSL outputs
• Supports 25 MHz crystal or clock input for 100 MHz output
• No termination resistors required for outputs
• Extended temperature range: -40 °C to +85 °C

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 current manufacturing lifecycle status as older revisions may be discontinued. Ensure ordering suffix GM2 corresponds to the 10-pin TDFN package.

Selection Notes

Select SI52112-A1-GM2 when spread spectrum functionality is unnecessary. Choose this part over the A2 series if EMI reduction via frequency modulation is not required. Verify that the 10-pin TDFN footprint fits the PCB layout constraints compared to the 8-pin TSSOP alternative.

Part Context

This component belongs to the Si52112-A1/A2 family designed for PCI-Express Gen 1 applications. It serves as a low-power clock source for embedded systems. For higher speed requirements like PCIe Gen 2 or Gen 3, the B3/B4 or B5/B6 variants are recommended respectively.

Replacement Considerations

Skyworks recommends the SI52112-B6-GT as a replacement for the SI52112-A2-GT. Specific direct replacements for the A1-GM2 variant are not explicitly listed in the provided datasheet.