SI52112-A2-GT

Overview

The SI52112-A2-GT is a PCIe Gen 1 dual-output clock generator from Skyworks Solutions. It sources two differential HCSL clocks from a 25 MHz crystal or clock input, supporting frequencies up to 100 MHz. The device features a triangular spread spectrum profile with a -0.5% down-spread range and a modulation frequency of 31.5 kHz for EMI reduction. Operating on a 3.3 V supply (2.97 V to 3.63 V), it draws 17 mA and operates within an extended temperature range of –40 °C to +85 °C. It is housed in an 8-pin TSSOP package.

Feature Summary

• PCIe Gen 1 compliant dual-output clock generation
• -0.5% triangular spread spectrum for EMI reduction
• 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 the specific ordering suffix matches the required package type and tape/reel configuration. Check current lifecycle status as manufacturing availability may vary. Ensure design compliance with the published electrical specifications before procurement.

Selection Notes

Select this model for applications requiring PCIe Gen 1 compliance with spread spectrum capabilities. The A2 variant provides -0.5% down-spread, unlike the A1 which lacks spread spectrum. Verify that the 8-pin TSSOP package fits the board layout constraints. Ensure the system power supply remains within the 2.97 V to 3.63 V operating range.

Part Context

This part belongs to the Si52112 family of PCI-Express clock generators. The 'A2' designation indicates support for spread spectrum outputs, while 'GT' specifies the 8-pin TSSOP package with RoHS6 compliance. For higher speed requirements, the B3/B4 series supports PCIe Gen 2, and the B5/B6 series supports PCIe Gen 3.

Replacement Considerations

Skyworks recommends the SI52112-B6-GT as a replacement. This alternative supports PCIe Gen 3 speeds but maintains similar package and pinout characteristics.