Oven Controlled Crystal Oscillators (OCXO’s)
OC-290
Description:
Small SMD OCXO with tight stability.
AT and SC-cut versions available.
Features
• 5 MHz, 10 MHz, 13 MHz standard.
Other frequencies available from 2 to 80 MHz
• Stability as low as ±5 x 10
-8
over 0°C to 50°C
• Aging: 1 x 10
-9
per day
• Package: 25.4 x 22 x 10.5 mm
• Supply voltage: +3.3 or +5.0 V
Performance Characteristics
Parameter
Frequency:
Package Size:
Supply Voltage (Vdd):
Supply Current:
Output Type:
Characteristic
10, 12.8, 16.384, 19.44, 20, 24.576, 20.48, 32.768, 38.88, 40 and 77.76 MHz
Available from 2 MHz to 80 MHz
25.4 x 22.0 x 10.5 mm (1.0” x 0.9” x 0.42”)
C
= 5 Vdc +5%
D
= 3.3 Vdc +5%
(Other supply voltages are available upon request)
<5W peak at turn-on, <1.25W stabilized @ 25
o
C (Temp Range
B
&
D)
<5W peak at turn-on, <1.5W stabilized @ 25
o
C (Temp Range
F)
HCMOS, LVHCMOS
Sinewave +0 dBm / 50 ohm
10 TTL
B - 508
= +5x10
-8
over 0
o
C to +50
o
C
B - 758
= +7.5x10
-8
over 0
o
C to +50
o
C
*B
- ST3
= Stratum 3
over 0
o
C to +50
o
C
D - 758
= +7.5x10
-8
over-20
o
C to +70
o
C
D - 107
= +1.0x10
-7
over -20
o
C to +70
o
C
*
D -ST3
= Stratum 3
over -20
o
C to +70
o
C
F -107
= +1.0x10
-7
over -40
o
C to +85
o
C
*F
-ST3
= Stratum 3
over -40
o
C to +85
o
C
F -507
= +5.0x10
-7
over -40
o
C to +85
o
C
*STRATUM 3 per GR-1244-CORE Table 3-1
Total Stability:
<4.6 x 10
-6
for all causes and 10 years
vs. Holdover:
<3.2 x 10
-7
for all causes and 24 hours
vs. Temperature:
<2.8 x 10
-7
peak to peak
Standard Stability Options:
Note:
Not all stabilities are
available with all frequency/output
combinations. Please consult factory.
Stability vs. Supply:
<5 pb for a 1% change in Supply Voltage
Aging:
Electrical Frequency Adjust:
Initial Accuracy @ +25
o
C:
A:
1 x 10
-8
/day, 2x10
-6
/year
B:
3 x 10
-9
/day, 1x10
-6
/year
C:
1 x 10
-9
/day, 3x10
-7
/year
N:
PTR Stratum 3
10 x 10
-6
typical range (with Aging
A
or
B)
2 x 10
-6
typical range (with Aging
C)
(with
F;
no frequency adjustment)
+1.5 ppm max after reflow
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
44
Oven Controlled Crystal Oscillators (OCXO’s)
OC-290
Outline Drawing
1.0±.01
(25.4±0.2)
0.1
(2.5)
4
0.1
(2.5)
Pad Layout
3
0 . 0 .75)
(O
R
5
0.87±.01
.70±.01 (22±0.2)
(17.8±0.2)
3
Foot print
for PCB Design
0.93
(23.5)
0.16
(4)
0.14
(3.5)
2
soldering pods
1
5
0.41
max (10.5)
0.93
(23.5
.70
(17.8)
Foot pr
for PCB D
OCXO
1
5
2
3
4
Pin Out Information
1 Control voltage VC
2 Reference voltage output VREF
3 Supply voltage VB
4 RF-output
5 Ground, case
Recommended Soldering Profile
Ordering Information
OC
Product Family
OC
= OCXO
Package
290
= 25.4X22 mm
SMD package
Output
A
= HCMOS, LVHCMOS
B
= 10 TTL
G
= Sinewave
290
C
A
C
508
C
A
10.0 MHz
Frequency
2 MHz to 80 MHz
Input
C
= 5.0V +5%
D
= 3.3V +5%
Temperature Range
B - 508
= +5x10
-8
over 0
o
C to +50
o
C
B - 758
= +7.5x10
-8
over 0
o
C to +50
o
C
*B
- ST3
= Stratum 3
over 0
o
C to +50
o
C
D - 758
= +7.5x10
-8
over-20
o
C to +70
o
C
D - 107
= +1.0x10
-7
over -20
o
C to +70
o
C
*
D -ST3
= Stratum 3
over -20
o
C to +70
o
C
F -107
= +1.0x10
-7
over -40
o
C to +85
o
C
*F
-ST3
= Stratum 3
over -40
o
C to +85
o
C
F -507
= +5.0x10
-7
over -40
o
C to +85
o
C
Electrical Frequency Adjust
A: 10 x 10
-6
typical range (with Aging
A
or
B)
or
2 x 10
-6
typical range (with Aging
C)
F: Fixed frequency. See initial accuracy.
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
N
= PTR Stratum 3
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
45
ADI Reference Circuit
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