ICS843011 datasheet(1/13 Pages) ICST

Part #	ICS843011

Description	FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR

PDF	13 Pages

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Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

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1 / 13 page

843011AG

www.icst.com/products/hiperclocks.html

REV. B DECEMBER 10, 2004

1

Integrated

Circuit

Systems, Inc.

ICS843011

FEMTOCLOCKS™CRYSTAL-TO-

3.3V LVPECL CLOCK GENERATOR

GENERAL DESCRIPTION

The ICS843011 is a Fibre Channel Clock Generator

and a member of the HiPerClocksTM family of high

performance devices from ICS. The ICS843011

uses a 26.5625MHz crystal to synthesize

106.25MHz or a 25MHz crystal to synthesize

100MHz. The ICS843011 has excellent <1ps phase jitter

performance, over the 637KHz – 10MHz integration range. The

ICS843011 is packaged in a small 8-pin TSSOP, making it ideal

for use in systems with limited board space.

FEATURES

• 1 differential 3.3V LVPECL output

• Crystal oscillator interface designed for 26.5625MHz

18pF parallel resonant crystal

• Output frequency: 106.25MHz or 100MHz

• VCO range: 560MHz - 680MHz

• RMS phase jitter @ 100MHz, using a 25MHz crystal

(637KHz - 10MHz): 0.80ps (typical)

• RMS phase noise at 106.25MHz

Phase noise:

Offset

Noise Power

100Hz ............... -92.8 dBc/Hz

1KHz .............. -119.6 dBc/Hz

10KHz .............. -129.5 dBc/Hz

100KHz .............. -130.5 dBc/Hz

• 3.3V operating supply

• Lead-Free package fully RoHS compliant

• -40°C to 85°C ambient operating temperature

HiPerClockS™

ICS

FREQUENCY TABLE

)

z

H

M

(

l

a

t

s

y

r

C)

z

H

M

(

y

c

n

e

u

q

e

r

F

t

u

p

t

u

O

5

2

6

5

.

6

25

2

.

6

0

1

5

20

0

1

ICS843011

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm package body

G Package

Top View

VCCA

VEE

XTAL_OUT

XTAL_IN

1

2

3

4

VCC

Q0

nQ0

nc

8

7

6

5

OSC

Phase

Detector

VCO

637.5MHz w/

26.5625MHz Ref.

M = ÷24 (fixed)

÷6

BLOCK DIAGRAM

PIN ASSIGNMENT

nQ0

Q0

XTAL_IN

XTAL_OUT

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