SI53112-A03AGM

Overview

The Si53112-A03AGM is a low-power, 12-output differential clock buffer designed to meet Intel DB1200ZL specifications. It supports 100 MHz and 133 MHz operation for PCIe Gen 1/2/3/4, SAS, SATA, Intel QPI, and Intel SMI applications. The device integrates all external resistors for 85 Ω transmission lines and features individual hardware output enable pins for power savings. It operates on a 3.3 V core supply and a 1.05 V to 3.3 V I/O supply. Key electrical parameters include a typical operating current of 172 mA at 133 MHz in PLL mode, 50 ps output-to-output skew, and 50 ps cycle-to-cycle jitter in PLL mode. The component is housed in a 64-pin QFN package.

Feature Summary

• Twelve 0.7 V low-power push-pull HCSL-compatible outputs
• Integrated termination resistors supporting 85 Ω transmission lines
• SMBus programmable PLL bandwidth with nine selectable addresses
• Individual hardware OE pins for each output clock

Applications

• Server systems
• Storage arrays
• Data center infrastructure
• Enterprise switches and routers

Procurement Notes

Verify the ordering suffix AGM corresponds to the specific tape-and-reel packaging configuration required for surface-mount assembly. Confirm that the source document explicitly defines the functional equivalence of the suffix to ensure no internal parameter variations exist compared to the base A03A model.

Selection Notes

Select this component when distributing reference clocks for high-speed serial interfaces requiring compliance with Intel DB1200ZL specifications. Ensure the design accommodates the 64-pin QFN package outline and land pattern. Verify that the system power budget accounts for approximately 172 mA typical current consumption at 133 MHz operation.

Part Context

This part belongs to the Si53112 family of 12-output PCIe Gen 3 buffers manufactured by Skyworks Solutions. It serves as a direct replacement for similar 12-channel clock distribution devices in server and storage platforms where low jitter and integrated termination are required for signal integrity.

Replacement Considerations

Publicly confirmed substitute part numbers include SI53112-A00AGM and SI53112-A00AGMR from Skyworks Solutions. These variants share the same DB1200ZL buffer functionality and pinout compatibility.