ICS843071AGILF datasheet(1/15 Pages) ICST

Part #	ICS843071AGILF

Description	FEMTOCLOCKS??CRYSTAL-TO- LVPECL CLOCK GENERATOR

PDF	15 Pages

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Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

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1 / 15 page

843071AGI

www.icst.com/products/hiperclocks.html

REV. A JANUARY 11, 2006

1

Integrated

Circuit

Systems, Inc.

ICS843071I

FEMTOCLOCKS™CRYSTAL-TO- LVPECL

CLOCK GENERATOR

GENERAL DESCRIPTION

The ICS843071I is a Serial ATA (SATA)/Serial

Attached SCSI (SAS) Clock Generator and a

member of the HiPerClocksTM family of high

performance devices from ICS. The ICS843071I

uses an 18pF parallel resonant crystal over

the range of 20.833MHz - 28.3MHz. For SATA/SAS

applications, a 25MHz crystal is used and either 75MHz or

150MHz may be selected with the FREQ_SEL pin. For 10Gb

Fibre Channel applications, a 26.5625MHz crystal is used

for 159.375MHz output. The ICS843071I has excellent

<1ps phase jitter performance, over the 12kHz - 20MHz

integration range. The ICS843071I is packaged in a small

8-pin TSSOP, making it ideal for use in systems with limited

board space.

FEATURES

• One Differential LVPECL output

• Crystal oscillator interface, 18pF parallel resonant crystal

(20.833MHz - 28.3MHz)

• Output frequency range: 62.5MHz - 170MHz

• VCO range: 500MHz - 680MHz

• RMS phase jitter @ 150MHz, using a 25MHz crystal

(12kHz - 20MHz): 0.64ps (typical) @ 3.3V output

• RMS phase jitter @ 159.375MHz, using a 26.5625MHz

crystal (1.875MHz - 20MHz): 0.40ps (typical) @ 3.3V

output

• 3.3V or 2.5V operating supply

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

• Available in both standard and lead-free RoHS compliant

packages

HiPerClockS™

ICS

ICS843071I

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

G Package

Top View

VCCA

XTAL_OUT

XTAL_IN

VEE

1

2

3

4

VCC

Q

nQ

FREQ_SEL

8

7

6

5

BLOCK DIAGRAM

OSC

Phase

Detector

VCO

500MHz - 680MHz

M = ÷24 (fixed)

FREQ_SEL

N

0

÷4

1

÷8

XTAL_IN

XTAL_OUT

Q

nQ

COMMON CONFIGURATION TABLE - SERIAL ATA/SERIAL ATTACHED SCSI

PIN ASSIGNMENT

FREQ_SEL Pullup

s

t

u

p

n

I

y

c

n

e

u

q

e

r

F

t

u

p

t

u

O

)

z

H

M

(

)

z

H

M

(

y

c

n

e

u

q

e

r

F

l

a

t

s

y

r

CL

E

S

_

Q

E

R

FM

N

n

o

i

t

a

c

i

l

p

i

t

l

u

M

N

/

M

e

u

l

a

V

5

20

4

24

6

0

5

1

5

21

4

28

3

5

7

5

2

6

5

.

6

20

4

24

6

5

7

3

.

9

5

1

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