**Oven Controlled Crystal Oscillators (OCXO's)**

**OC-260 Series (CO-760)**

**Description:**

**The OC-260 Series OCXO offers excellent temperature stability**

and aging in a 1" x 1" x 0.52" package.

**Features:**

** Frequencies: 5, 10, 12.8, 13, 16.384, 19.44, 20, 20.48 MHz**

** Stabilities: As low as +1 x 10**

**-8**

** Temperature Range: As wide as -40**

**o**

**C to +85**

**o**

**C**

** Package: 1.0" x 1.0" x 0.52"**

** Output: HCMOS, Sinewave**

** Supply Voltage: 5 Volts or 3.3 Volts**

**Performance Characteristics**

Standard Frequencies:

5.0, 10.0, 12.8, 13.0, 16.384, 19.44, 20.0, 20.48 MHz.

Available from 1 to 80 MHz.

Package Size:

25.7 x 25.7x 13.2 mm (1.0" x 1.0" x 0.52")

Supply Voltage:

**C**=5 Vdc 5%

**D**=3.3 Vdc 5% (HCMOS output only)

Input Power (steady state):

<1.5W @ +25

o

C (-20C / +70C)

Input Power (turn-on):

<3W (-20C/+70C)

Output Type:

**A**: HCMOS

**J**: Sinewave; +7 dBm into 50 ohm (+5V supply only)

Output Level:

5 V: "0" <0.5 V, "1" >4.5 V 3.3 V: "0" <0.3 V, "1" >3.0 V

(HCMOS output)

Rise/Fall Time tr/tf:

<10 ns (10% - 90%, HCMOS)

Symmetry (Duty/Cycle):

50/50 +10% (@50% Vdd, HCMOS)

Harmonics/subs:

-20 dBc (for sinewave output)

Temperature Stability:

**B-208**: 2 x 10

-8

over 0/50C

**B-107**: 1 x 10

-7

over 0/50C

**D-408**: 4 x 10

-8

over -20/70C

**D-107**: 1 x 10

-7

over -20/70C

**F-107**: 1 x 10

-7

over -40/85C

**F-207**: 2 x 10

-7

over -40/85C

Note: Tighter stability options are available - contact factory.

Aging:

**A**: 1 x 10

-8

/day, 2x10

-6

/year

**C**: 1 x 10

-9

/day, 3x10

-7

/year

**B**: 3 x 10

-9

/day, 1x10

-6

/year

Short Term Stability

(Allan Deviation)

: 5 x 10

-11

/second (with aging **A **or **B**)

1 x 10

-11

/second (with aging **C**)

Phase Noise:

-110 dBc/Hz @ 10 Hz

-150 dBc/Hz @ 10 kHz

(typical @ 10 MHz)

-130 dBc/Hz @ 100 Hz

-150 dBc/Hz @ 50 kHz

-145 dBc/Hz @ 1 kHz

Frequency vs. Supply:

5 x 10

-9

/percent (with Aging **A **or **B**); 2 x 10

-9

/percent (with Aging **C**)

Electrical Frequency Adjust:

10 x 10

-6

typical range (with Aging **A **or **B**)

2 x 10

-6

typical range (with Aging **C**)

Mechanical Configuration:

Pins for PCB mounting

**Parameter Characteristics**

Vectron International 267 Lowell Road, Hudson, NH 03051 Tel: 1-88-VECTRON-1 Web: www.vectron.com

42

8798_AA's Vectron 05/30/02 3:11 PM Page 42

4

3

(1.01)

12.1!

(.480)

STANDOFFS

(4 PLACES)

0.25

(.010)

13.20

(.52)

2.8

(.11)

.8

(.031)

Dia

5 Places

mm

(in.)

19.05 .254

(.750 .010)

max.

25.7

(1.01)

.65

(.025)

.254

(.750 .010)

**Oven Controlled Crystal Oscillators (OCXO's)**

**OC-260 Series (CO-760)**

**Outline Drawing**

**Pin **

**Function**

1

Output

2

GND, Case

3 Electrical Frequency Adjustment Input

or N/C*

4 N/C or Reference Voltage Output*

5

Supply Voltage

Pin numbers are for reference only,

and may not appear on unit.

**OC**

**Temperature Stability***

B-107 = 1x10

-7

over 0C to +50C

**B-208 **= 2x10

-8

over 0C to +50C

**D-107 **= 1x10

-7

over -20C to +70C

**D-408 **= 4x10

-8

over -20C to +70C

**F-207 **= 2x10

-7

over -40C to +85C

**F-107 **= 1x10

-7

over -40C to +85C

*

Other stability options are available upon request

**Frequency**

1 - 80 MHz

**260**

**A**

**C**

**D**

**107**

**C**

**20**

**Product Family**

OC = OCXO

**Package**

260 = 25.7x25.7 mm

Thru-hole

**Supply Voltage**

C = 5.0V 5%

**D **= 3.3V 5%

**Output**

A = HCMOS (100K // 10 pF Load)

**J **= Sinewave +7 dBm/50 ohm

(5.0V supply only)

**MHz**

**Aging**

A = 1 x 10

-8

/day, 2 x 10

-6

/year

**B **= 3 x 10

-9

/day, 1 x 10

-6

/year

**C **= 1 x 10

-9

/day, 3 x 10

-7

/year

**Ordering Information**

**Pin Out Information**

Vectron International 267 Lowell Road, Hudson, NH 03051 Tel: 1-88-VECTRON-1 Web: www.vectron.com

**Electrical Frequency Adjust**

10 x 10

-6

typical range (with Aging **A **or **B**)

2 x 10

-6

typical range (with Aging **C**)

**A**

43

O C X O

8798_AA's Vectron 05/30/02 3:11 PM Page 43

* custom part number to be assigned