Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 2, 2021

Si53112

DB1200ZL 12-OUTPUT PCIE GEN 3 BUFFER

Features

Applications

Description

The Si53112 is a low-power, 12-output, differential clock buffer that meets

all of the performance requirements of the Intel DB1200ZL specification.

The device is optimized for distributing reference clocks for Intel® Quick-

Path Interconnect (Intel QPI), PCIe Gen 1/Gen 2/Gen 3/Gen 4, SAS,

SATA, and Intel Scalable Memory Interconnect (Intel SMI) applications.

The VCO of the device is optimized to support 100 MHz and 133 MHz

operation. Each differential output has a dedicated hardware output

enable pin for maximum flexibility and power savings. Measuring PCIe

clock jitter is quick and easy with the Skyworks Solutions PCIe Clock Jit-

ter Tool. Download it for free at https://www.skyworksinc.com/en/applica-

tion-pages/pci-express-learning-center.



Twelve 0.7 V low-power, push-

pull, HCSL-compatible

PCIe Gen 3 outputs



Individual OE HW pins for each

output clock



100 MHz /133 MHz PLL

operation, supports PCIe and

QPI



PLL bandwidth SW SMBUS

programming overrides the latch

value from HW pin



9 selectable SMBUS addresses



SMBus address configurable to

allow multiple buffers in a single

control network 3.3 V supply

voltage operation



PLL or bypass mode



Spread spectrum tolerable



1.05 to 3.3 V I/O supply voltage



50 ps output-to-output skew



50 ps cyc-cyc jitter (PLL mode)



Low phase jitter (Intel QPI, PCIe

Gen 1/2/3/4 common clock

compliant)



Gen 3 SRNS Compliant



100 ps input-to-output delay



Extended Temperature:

–40 to 85 °C



Package: 64-pin QFN



For higher output devices or

variations of this device, contact

Skyworks Solutions



Server



Storage



Datacenter



Enterprise Switches and Routers

Patents pending

Ordering Information:

See page 30.