CFPO-DO Series
ISSUE 1; 19 OCTOBER 2004
Description
■
The CFPO-DO series are a range of Super Single Oven
OCXO’s designed as a compact and smart frequency
source/time keeping reference for all synchronization
systems including global ositioning system (GPS)
based equipment
CFPO-DO series key performances are:-
■
Holdover better than 7µs over 24 hours
■
Frequency stability over operating temperature range
( see table text )
■
Frequency stability versus change of all operating
conditions (pressure, supply, load, etc.)
Package Options (metal leaded package, hermetically
sealed)
■
CFPO-DO-1 50.8 x 50.8 x 25.0mm (50)
■
CFPO-DO-2 51.0 x 41.0 x 25.0mm (51)
■
CFPO-DO-3 51.0 x 41.0 x 19.05mm (51B)
■
CFPO-DO-4 40.0 x 30.0 x 20.0mm (40)
Supply Options
■
Standard: 12V ±5% (12)
Standard Frequencies
■
10.0, 12.8, 13.0MHz
Frequency Ranges
■
8.192 to 15.0MHz
■
Initial tolerance @ 25°C Fo ±1x10
-7
Power Consumption
■
Warm-up: <750mA
■
@25°C: <250mA (calm air)
Warm Up Time @ 25°C (typical)
±1 x 10
-8
after 10 mins
5.0
∅1.0±0.05
Environmental Specification (non-operating)
Storage temperature range -55 to 85°C
■
Shocks - half-sine 50g 11ms / 3 per direction
IEC 68-2-27 Test Ea / Severity 50A
■
Vibration - 10g / 10-500Hz IEC 68-2-06 Test
Fc / Severity 500/10
■
Marking (printed label on top of can)
■
C-MAC or Customer’s Logo
■
C-MAC or Customer’s Part Number
■
Nominal Frequency (Fo) in MHz
■
Serial Number (1 letter & 5 numbers )
■
Date Code (4 digits for year and week)
Phase Noise @10.0MHz typical (sinewave)
■
10Hz -125dBc/Hz
■
100Hz -145dBc/Hz
■
1kHz -155dBc/Hz
■
10kHz -158dBc/Hz
Outline in mm - Package 50 (without Oven Alarm)
20.3 20.3
1 2
3
40.6SQ
Pin
1.
2.
3.
4.
5.
Function
Input frequency control
Output ref. voltage
Output signal
Mechanical GND
and (–) supply
Input supply (+)
Bottom View
5
4
50.8SQ max
25.0 max
■
All tolerances ±0.2mm
Retrace after 24 Hours off @25°C (typical)
■
±3 x 10
-9
after 60 minutes
Frequency Adjustment
■
> ±3 x 10
-7
from 0V to reference voltage, monotonic
& standard positive slope (negative slope optional).
Sufficient to cover 10 years ageing
Oven Alarm “logic level” signal (optional) (A)
■
Logic “0” during warm-up time and if oven is not
operating
■
Logic “1” when temperature regulation is operating
Reference Voltage
■
Standard Reference voltage output +8V
■
Optional +5.0V or +6.2V (except Package 40)
Output Compatibility
■
Sinewave +7dBm ±2dBm into 50Ω load (S)
■
Squarewave optional (C)
Harmonic Distortion
■
Harmonics & sub-harmonics < -30dBc
■
Non-Harmonics < -75dBc
Outline in mm - Package 40 (with Oven Alarm)
Bottom
View
17.8
3
25.4
22.9
4
5
2
6
1
40.0 max
30.0max
19.5 max
Pin Function
1. Input frequency control
2. Output reference
voltage
3. Input supply (+)
4. Output signal
5. Mechanical GND
and (-) supply
OCXOs
0.95
All tolerances ±0.2mm
Europe Tel: +44 (0)1460 270200
Americas Tel: +1 919 941 9333
Asia
Tel: +86 755 8826 5991
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
4.0±0.5
∅0.8±0.05
Website: www.cmac.com
Electrical Specification
Stability
within
Temperature
Range
pk to pk
Long Term Stability
(after 1 week operation)
Frequency
Stability Vs Supply
Voltage Change Standard Package Type
(±5%) and Load
(max height)
Over 10 Years
Change
(50Ω±10%)
<±6x10
-8
<±7.5x10
-8
<±1x10
-7
<±3x10
-7
S
12
A
<±5x10
-11
<±1x10
-10
<±1x10
-10
<±5x10
-10
8.0 10.0MHz
(50) 25mm
(51) 25mm
(51B) 19.05mm
(40) 20mm (*)
Operating
Temperature
Range
Per Day
Per Month
Per Year
Model
Number
<1x10
-10
<2x10
-10
-20 to 70°C
<5x10
-10
<1x10
-9
Ordering Example
Model Number
<±5x10
-11
<±7x10
-11
<±1x10
-10
<±2x10
-10
<±1.5x10
-9
<±2x10
-9
<3x10
-9
<5x10
-9
<±1.2x10
-8
<±1.5x10
-8
<±2x10
-8
<±5x10
-8
50
CFPO-DO-1
CFPO-DO-2
CFPO-DO-3
CFPO-DO-4
CFPO-DO-1
Package Outline 50, 51, 51B, 40 (see above table)
Output Signal (S) (Sine is standard) (C)(HCMOS optional)
Supply Voltage (12) (12V is standard)
Oven Alarm Option (A)
Reference Voltage (8.0V standard, optional = 5V or 6.2V with packages 50 & 51
No Reference for all models = N)
Frequency (MHz)
For non standard options such as different temperature ranges, negative slope EFC, cold start-up please contact our sales
office. (*) Package height 16mm max will be available from mid 2005
Outline in mm - Package 51 (with Oven Alarm)
51.0 max
42.0
41.0 max
3
2
1
32.0
Outlin in mm - Package 51B (without Oven Alarm)
51.0 max
42.0
41.0 max
3
2
1
32.0
Pin Function
1. Mechanical
GND and supply
2 . Frequency control input
3 . Ref. voltage output
4 . Supply input
5 . Signal output
Bottom View
4
6
5
Pin Function
1. Mechanical
GND and supply
2 . Frequency control input
3 . Ref. voltage output
4 . Supply Input
5 . Signal output
6. Oven Alarm
Bottom View
4
5
25.0 max
10.15
Europe Tel: +44 (0)1460 270200
Americas Tel: +1 919 941 9333
Asia
Tel: +86 755 8826 5991
5.0
∅1.0±0.05
All tolerances ±0.2mm
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
5.0
∅1.0±0.05
19.05 max
All tolerances ±0.2mm
Website: www.cmac.com
OCXOs
ADI Reference Circuit
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