ICST ICS9112M-31, ICS9112M-32 Datasheet

Integrated

ICS9 112-31/32

Circuit
Systems, Inc.

Preliminary Product Preview

Frequency Generator for Fibre Channel Systems

General Description Features

The ICS9112-31/32 are high-speed clock generators designed
to support fibre channel system requirements. The ICS9112-
31/32 generates 106.25 MHz from a 25 MHz crystal.

An exact frequency multiplying ratio ensures better than
±100 ppm frequency accuracy using a standard AT crystal
with external load capacitors (typically 33pF ±5% for an
18pF load crystal). Achieving ±100 ppm over four years
requires the crystal to have a ±20 ppm initial accuracy, ±30
ppm temperature and ±5 ppm/year aging coefficients.

The ICS9112-31/32 with less than 25ps accumulative jitter
is well suited for Fibre Channel applications.

Block Diagram

• Generates 106.25 MHz clocks from a 25 MHz
crystal

• Less than 45ps one sigma jitter (15ps typ.)

• Less than ±130ps absolute jitter

• Less than 25ps accumulative jitter @ 256 cycles

• Rise/fall times less than 1.2ns driving 15pF

• On-chip loop filter components

• 3.0V-5.5V supply range

• 8-pin, 150-mil SOIC package

Applications

• Specifically designed to support the high-speed
clocking requirements of fibre channel systems.

9112-31 9112-32 Rev D 3/2/99

PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.

ICS9112-31/32

Preliminary Product Preview

Pin Configurations

8-Pin SOIC

Functionality

EO

100.5252.601

000.52etatsirT

Pin Descriptions

NIP

REBMUN

1DNGARWP.dnuorggolanA
2DNGRWP.dnuorGlatigiD
31XNI .sroticapacdaollanretxeseriuqeR.zHM00.52yllanimon;ecivedottupnikcolcrolatsyrC
42XNI.sroticapacdaollanretxeseriuqeR.ecivedmorftuptuoevirdlatsyrC
5EONI )TUOF(tuptuokcolcehtsetatsirtti,wolsiEOnehw:).pu_lluplanretnisah(elbanEtuptuO

6

7

81KLCTUO)zHM52.601(tuptuokcolC

DDVRWP)13-(ylppustlov0.5+ro3.3+

EMANNIPEPYTNOITPIRCSED

2KLCTUO)23-()zHm52.601(tuptuokcolC
DDVARWP)13-(.)egatlovrewoplatigidlauqetsuM(.rewopgolanA

DDVA+DDVRWP)23-(ylppustloV0.5+ro3.3+,rewopgolanadnalatigiD

8-Pin SOIC

2X,1X
)zHM(

TUOF

)zHM(

2