ICS9112M-43 ICST [Integrated Circuit Systems], ICS9112M-43 Datasheet

ICS9112M-43

Manufacturer Part Number

ICS9112M-43

Description

Frequency Generator for Gigabit Ethernet Systems

Manufacturer

ICST [Integrated Circuit Systems]

Datasheet

1.ICS9112M-43.pdf (5 pages)

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Frequency Generator for Gigabit Ethernet Systems

General Description

The ICS9112-43/44 is a high speed clock generator designed

to support Gigabit Ethernet system requirements. The

ICS9112-43/44 generates 125 MHz from a 20 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 ICS9112-43/44 with less than 50ps accumulative jitter

is well suited for Gigabit Ethernet applications.

Block Diagram

9112-43 9112-44 Rev D 3/3/99

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Applications

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Features

Specifically designed to support the high-speed

clocking requirements of Gigabit Ethernet systems.

Generates 125 MHz clocks from a 20 MHz crystal

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

Less than ±130ps absolute jitter

Less than 50ps 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

Preliminary Product Preview

ICS9112-43/44

Related parts for ICS9112M-43

ICS9112M-43 Summary of contents

Page 1

Frequency Generator for Gigabit Ethernet Systems General Description The ICS9112-43/ high speed clock generator designed to support Gigabit Ethernet system requirements. The ICS9112-43/44 generates 125 MHz from a 20 MHz crystal. An exact frequency multiplying ratio ensures better ...

Page 2

ICS9112-43/44 Preliminary Product Preview Pin Configurations 8-Pin SOIC Pin Descriptions ...

Page 3

Absolute Maximum Ratings Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in ...

Page 4

ICS9112-43/44 Preliminary Product Preview Electrical Characteristics at 3. ...

Page 5

... Ordering Information ICS9112M-43/44 Example: ICS XXXX M-PPP Pattern Number digit number for parts with ROM code patterns) Package Type Device Type (consists digit numbers) Prefix Preliminary Product Preview 8-Pin Plastic SOIC Package M=SOIC, SOP ICS=Standard Device ICS9112-43/44 ...

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