CRYSTAL OSCILLATORS

Data Sheet 0635E

Rev. H

OF-X8HXXXXX-X Series

Precision SC-cut OCXO in 25x22 mm Low Profile SMD Package

Product Data Sheet

Features

•

SC-cut crystal

High Stability (up to ± 5x10-9)

•

Low Aging (5x10-10/day, 5x10-8/year)

•

1.015 (25.78 mm)Max.

•

Very Low Phase Noise(-165 dBc/Hz, TYP, floor)

5

1

•

Sine Wave or HCMOS/TTL output

•

5 MHz to 250 MHz Frequencies Available

0.885 (22.48 mm)Max.

2

•

Stratum 3E

3

4

Applications

0.43 (10.8 mm)

•

Telecommunication Systems

0.15 (3,8 mm)

•

Data Communications

4

•

GPS

0.1 (2,5 mm)

0.1 (2,5 mm)

3

•

Instrumentation

•

COTS/Dual use

0.70 (17,8 mm)

0.70 (17,8 mm)

2

5

1

0.1 (2,5 mm)

1.12 (28.4 mm)

Vcc

Vc   1

3

OUTPUT

Vref 2

DUT

4

5

10K

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881

Email: nelsales@nelfc.com www.nelfc.com

CRYSTAL OSCILLATORS

Data Sheet 0635E

Rev. H

OF-X8HXXXXX-X Series

Parameter

Symb

Condition

Min

Typ

Max

Unit

Note

Absolute Maximum Ratings

Ts

-60

90

Storage temper.

°C

Electrical

F

5

10.000

250

MHz

1*

Frequency

ΔF/F

vs. Temp.

±10

ppb

See chart below

Frequency stability

vs. Supply

1

ppb/V

ΔF/F

per day

±0.5

ppb

after 30 days

Aging

per year

±50

ppb

2*

1s

10e-12

Allan Variance

1Hz

-95

dBc/Hz

3*

SSB Phase Noise

10 Hz

-125

100 Hz

-145

1 KHz

-155

10 KHz

-165

Vcc

4.75

5.0

5.25

V

See chart below to specify

Input Voltage

3.15

3.3

3.45

11.4

12.0

12.6

P

steady state, 25°C

1.0

1.2

W

Standard Operating

Power consumption

start-up

3.2

3.5

Temperature, for Op

Temp. 85 °C ad 20%

Harmonics/Sine

-40

dBc

≥30MHz

Sub Harmonic Level

None

<30MHz

10KOhm//15pF (CMOS/TTL), 50 Ohm (Sinewave)

Load

τ

to 0.1ppm accuracy

3

minutes

Warm-up time

HCMOS/TTL compatible or Sinewave (+7± 3) dBm

Output Waveform

Vc

0

4.3

V

Vcc=5V or 12V

Control voltage

0

2.8

Vcc=3.3V

from nominal F

±0.5

±1

ppm

Pull range

Positive

Deviation slope

Environmental and Mechanical

-30°C to 70°C Standard, Other options – see chart below

Operating temp. range

Per MIL-STD-202, 30G, 11ms

Mechanical Shock

Per MIL-STD-202, 5G swept sine to 10 to 500Hz

Vibration

260°C, 10s

Soldering Conditions

Electrical Connections

Pin #1-Vc ; Pin#2 – Vref; Pin #3 – Vcc; Pin #4- Output ; Pin #5- GND; 4*

Pin Out

Notes:

1* Higher frequencies can be achieved either by using higher frequency crystals or by low noise analog harmonic multiplication. Both

methods have advantages and drawbacks. If lowest possible phase noise on the noise floor is most important – high frequency crystal will be used. If

phase noise close to the carrier and aging are more important – multiplication will be used. Please consult factory for your specific requirement.

2* Aging rate is usually proportional to the operating frequency, unless higher frequency is achieved by multiplication. Keep it in mind

while specifying aging.

3* Phase noise deteriorates with frequencies going higher. If analog multiplication is used to achieve higher frequency the phase noise

roughly follows the formula of additional 20LogN, where N is a multiplication factor across entire frequency offset range. If higher frequency is

achieved by using higher frequency crystal phase noise close to the carrier deteriorates due to the lower Q of the crystal and is usually worse,

compared to multiplied solution. On the noise floor, however it remains more or less the same. This design usually starts utilizing multiplication

techniques in the range of 25 MHz to 35 MHz.

4* Pads "A" and "B" may or may not appear on the actual package. They can be used when additional functions i.e. "Oven Ready" alarm

or "Tristate" are specified. Please consult factory.

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881

Email: nelsales@nelfc.com www.nelfc.com

CRYSTAL OSCILLATORS

Data Sheet 0635E

OF-X8HXXXXX-X Series

Rev. H

Creating a Part Number

OF  -   X   8H  X   XX    X    X  -  X- FREQ

Environmental

Package Code

Code

Specification

OF 5 pad 25x22mm SMD

L

Contains a level of lead

that is in excess of

RoHS directive and is

Supply Voltage

not designed for reflow

R

RoHS compliant, not

Code

Specification

designed for reflow

0

5V ± 5%

Temperature Stability

A

3.3V± 5%

F

12V 5%

Code

Specification

1x10-7

17

Temperature Range

5x10-8

58

Output

2x10-8

28

Code

Specification

1x10-8

18

Code

Specification

A

0°C to 50°C

Aging

5x10-9

59

T

TTL

B

0°C to 70°C

Yx10-Z

YZ

S

Sinewave

C

-20°C to 70°C

Code

Specification

D

-40°C to 85°C

1x10-9/Day

L

E

-10°C to 60°C

5x10-10/Day

S

Not all combinations are available. Consult Factory.

F

-40°C to 80°C

2x10-10/Day

P

G

-30°C to 70°C

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881

Email: nelsales@nelfc.com www.nelfc.com