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

Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 31, 2021

Si52112-B3/B4

PCI-EXPRESS GEN 2 DUAL OUTPUT CLOCK GENERATOR

Features

Applications

Description

Si52112-B3/B4 is a high-performance, PCIe clock generator that can

source two PCIe clocks from a 25 MHz crystal or clock input. The clock

outputs are compliant to PCIe Gen 1 and Gen 2 specifications. The ultra-

small footprint (3x3 mm) and industry leading low power consumption

make Si52112-B3/B4 the ideal clock solution for consumer and

embedded applications.



PCI-Express Gen 1 and Gen 2

compliant



Low power HCSL differential

output buffers



Supports Serial-ATA (SATA) at

100 MHz



No termination resistors required



25 MHz Crystal Input or Clock

input



Triangular spread spectrum

profile for maximum EMI

reduction (Si52112-B4)



Extended Temperature:

–40 to 85 °C



3.3 V Power supply



Small package 10-pin TDFN

(3x3 mm)



Si52112-B3 does not support

spread spectrum outputs



Si52112-B4 supports 0.5% down

spread outputs



For PCIe Gen3 applications, see

Si52112-B5/B6



Network Attached Storage



Multi-function Printer



Wireless Access Point



Routers

XIN/CLKIN

XOUT

DIFF2

DIFF1

PLL

Divider

VDD

VSS

Patents pending

Ordering Information:

See page 13

Pin Assignments

10

9

8

7

1

2

3

4

VDD

VDD

XOUT

XIN/CLKIN

VSS

VSS

5

6

DIFF1

DIFF1

DIFF2

DIFF2