ICS843051 datasheet(1/15 Pages) ICST

Part #	ICS843051

Description	FEMTOCLOCKS CRYSTAL-TO-3.3V 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

843051AG

www.icst.com/products/hiperclocks.html

REV. A DECEMBER 14, 2004

1

Integrated

Circuit

Systems, Inc.

ICS843051

FEMTOCLOCKS™CRYSTAL-TO-

3.3V LVPECL CLOCK GENERATOR

GENERAL DESCRIPTION

The ICS843051 is a Gb Ethernet Generator and a

member of the HiPerClocksTM family of high

performance devices from ICS.The ICS843051 can

synthesize 10 Gigabit Ethernet, SONET, or Serial

ATA reference clock frequencies with the

appropriate choice of crystal and output divider.The ICS843051

has excellent phase jitter performance and 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

18pF parallel resonant crystals

• RMS phase jitter at:

155.52MHz (12KHz - 20MHz): 0.74ps (typical)

156.25MHz (1.875MHz - 20MHz): 0.43ps (typical)

161.13MHz (1.933MHz - 20MHz): 0.43ps (typical)

• RMS phase noise at 156.25MHz

Offset

Noise Power

100Hz .................. -95 dBc/Hz

1KHz ................ -110 dBc/Hz

10KHz ................ -125 dBc/Hz

100KHz ................ -125 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

• Lead-Free package fully RoHS compliant

HiPerClockS™

ICS

ICS843051

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

FREQ_SEL

8

7

6

5

OSC

Phase

Detector

VCO

0 ÷4 (default)

1 ÷8

÷32

(fixed)

XTAL_IN

XTAL_OUT

nQ0

Q0

FREQ_SEL

BLOCK DIAGRAM

PIN ASSIGNMENT

FREQUENCY TABLE

s

t

u

p

n

I

y

c

n

e

u

q

e

r

F

t

u

p

t

u

O

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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

F

1

0

6

1

4

1

.

0

20

2

1

8

2

3

1

.

1

6

1

0

6

1

4

1

.

0

21

6

0

4

6

5

.

0

8

5

2

1

3

5

.

9

10

5

2

.

6

5

1

5

2

1

3

5

.

9

11

5

2

1

.

8

7

4

.

9

10

2

5

.

5

1

4

.

9

11

6

7

.

7

5

7

.

8

10

0

5

1

5

7

.

8

11

5

7

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