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 7
µs 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
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 50
Ω load (S)
■
Squarewave optional (C)
Harmonic Distortion
■
Harmonics & sub-harmonics < -30dBc
■
Non-Harmonics < -75dBc
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)
50.8SQ max
∅1.0±0.05
All tolerances ±0.2mm
12
5
4
3
Pin Function
1.
Input frequency control
2.
Output ref. voltage
3.
Output signal
4.
Mechanical GND
and (–) supply
5.
Input supply (+)
Bottom View
20.3 20.3
Outline in mm - Package 40 (with Oven Alarm)
25.4
22.9
40.0 max
1
2
3
4
6
5
All tolerances ±0.2mm
∅0.8±0.05
Pin Function
1.
Input frequency control
2.
Output reference
voltage
3.
Input supply (+)
4.
Output signal
5.
Mechanical GND
and (-) supply
Bottom
View
Europe
Tel: +44 (0)1460 270200
Fax: +44 (0)1460 72578
Website: www.cmac.com
Americas Tel: +1 919 941 9333
Fax: +1 919 941 9371
Asia
Tel: +86 755 8826 5991
Fax: +86 755 8826 5990