Preliminary Rev. 0.3 3/07

Copyright © 2007 by Silicon Laboratories

Si5367

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Si5367

Description

The Si5367 is a low jitter, precision clock multiplier for

applications requiring clock multiplication without jitter

attenuation. The Si5367 accepts four clock inputs ranging

from 10 to 707 MHz and generates five frequency-multiplied

clock outputs ranging from 10 to 945 MHz and select

frequencies to 1.4 GHz. The device provides virtually any

frequency translation combination across this operating

range. The outputs are divided down separately from a

common source. The Si5367 input clock frequency and clock

interface. The Si5367 is based on Silicon Laboratories' 3rd-

frequency synthesis in a highly integrated PLL solution that

eliminates the need for external VCXO and loop filter

components. The DSPLL loop bandwidth is digitally

programmable, providing jitter performance optimization at

the application level. Operating from a single 1.8 or 2.5 V

supply, the Si5367 is ideal for providing clock multiplication in

high performance timing applications.

Applications

SONET/SDH OC-48/OC-192 line cards

GbE/10GbE, 1/2/4/8/10GFC line cards

ITU G.709 and custom FEC line cards

Wireless basestations

Data converter clocking

xDSL

SONET/SDH + PDH clock synthesis

Test and measurement

Features

Generates any frequency from 10 to 945 MHz and

select frequencies to 1.4 GHz from an input

frequency of 10 to 710 MHz

Low jitter clock outputs w/jitter generation as low as

0.6 ps rms (50 kHz–80 MHz)

Integrated loop filter with selectable loop bandwidth

(30 kHz to 1.3 MHz)

Four clock inputs w/manual or automatically

controlled hitless switching

Five clock outputs with selectable signal format

(LVPECL, LVDS, CML, CMOS)

Support for ITU G.709 FEC ratios (255/238,

255/237, 255/236)

LOS alarm outputs

Digitally-controlled output phase adjust

On-chip voltage regulator for 1.8 or 2.5 V ±10%

operation

Small size: 14 x 14 mm 100-pin TQFP

Pb-free, RoHS compliant

Clock Select

CKOUT2

CKIN1

CKOUT1

CKIN2

Control

÷ NC1

÷ NC2

CKIN3

CKIN4

CKOUT4

÷ NC4

CKOUT5

÷ NC5

VDD (1.8 or 2.5 V)

GND

÷ N32

÷ N31

DSPLL

®

÷ N2

CKOUT3

÷ NC3

÷ N33

÷ N34

Device Interrupt

LOS Alarms