SI53112-A03AGMR

Overview

The Skyworks SI53112-A03AGMR is a low-power, 12-output differential clock buffer compliant with the Intel DB1200ZL specification. It features integrated termination resistors for 85-ohm transmission lines and supports 100 MHz or 133 MHz operation via an internal PLL optimized for PCIe Gen 1/2/3/4, SAS, SATA, Intel QPI, and Intel SMI applications. The device operates on a 3.3 V core supply (VDD/VDD_A) and a 1.05 V to 3.3 V I/O supply (VDD_IO). Key electrical parameters include a typical operating current of 182 mA at 133 MHz, output-to-output skew of 50 ps maximum, and input-to-output delay of 100 ps. It utilizes 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
• Individual hardware OE pins for each output clock
• SMBus programmable PLL bandwidth overrides hardware latch values

Applications

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

Procurement Notes

Verify the 'GMR' suffix indicates tape-and-reel packaging when sourcing. Confirm the specific revision level matches design requirements, as product information is subject to change without notice. Ensure compatibility with the required SMBus address configuration using SA_0 and SA_1 pins.

Selection Notes

Select this component for designs requiring compliance with Intel DB1200ZL specifications for PCIe Gen 3 and Gen 4 common clock architectures. Ensure the system power supply provides stable 3.3 V for VDD/VDD_A and appropriate voltage levels for VDD_IO between 1.05 V and 3.3 V. Consider the 64-pin QFN footprint and thermal management capabilities during PCB layout.

Part Context

The SI53112-A03A belongs to Skyworks' family of high-performance clock buffers designed for high-speed serial interfaces. The 'A03A' designation typically refers to a specific version within the Si53112 series, often associated with Rev 1.0 documentation. This part serves as a critical timing distribution element in complex digital systems requiring multiple synchronized reference clocks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions directly for higher output count variations or alternative devices within the portfolio.