OCXOs
CFPO-SC Series
(Hi-Reliable OCXO - Up to “Stratum 2” performance - No re-calibration over time)
ISSUE 1; 19 OCTOBER 2004
Description
■ The CFPO-SC series are a range of OCXO’s removing the need
for customers to re-calibrate their equipment over the
lifetime of operation
Main performances are:-
■ Free-run stability range over lifetime operation from:
±1.6x10-8 (CFPO-SC1 for replacing Rubidium clocks)
to ±1x10-7 (CFPO-SC4)
■ Holdover range over 24 hours operation:
From 7
s over -20 to 70°C (CFPO-SC2) to 10s with ±15°C
ambient change
Package Options (metal leaded package, hermetically sealed)
■
CFPO-SC-1
50.8 x 50.8 x 38.0mm (50B)
■
CFPO-SC-2
50.8 x 50.8 x 25.0mm (50)
■
CFPO-SC-3
51.0 X 41.0 X 25.0mm (51)
■
CFPO-SC-4
40.0 X 30.0 X 20.0mm (40)
Supply Options
■
Standard: 12V ±5% (12)
■
Optional: 15V (15)
Standard Frequencies
■
5.0, 8.192, 10.0, 10.24MHz
Frequency Range
■
5.0 to 15.0MHz
■
Higher frequencies may be available upon request
■
Initial tolerance @ 25°C
Fo ±1x10-8
Power Consumption (CFPO-SC1 / others)
■
Warm-up: <7.0W / 6.0W
■
@25°C:
<2.5W / 1.8W (calm air)
Warm Up Time @ 25°C (typical)
■
±1x10-8 after 15 mins (for CFPO-SC1)
■
±1x10-8 after 10 mins (for others)
Retrace after 24 Hours on / 24 Hours off @25°C
■
±2x10-9 after 60 minutes
Frequency Adjustment
■
> ±5.0x10-8 from 0V to reference voltage
■
EFC monotonic and positive slope (negative optional)
Oven Alarm “l(fā)ogic 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 Ouput (optional no reference voltage)
■
CFPO-SC-1 pkg 50B 8.0V±0.3V
■
CFPO-SC-2 pkg 50
8.2V±0.3V (options = 5V / 6.2V)
■
CFPO-SC-3 pkg 51
8.2V±0.3V (options = 5V / 6.2V)
■
CFPO-SC-4 pkg 40
8.0V±0.3V
Output Compatibility
■
Sinewave +7dBm ±2dBm into 50
load (S)
■
Squarewave optional (C)
Harmonic Distortion
■
Harmonics
< -40dBc
■
Spurious
< -80dBc
Phase Noise 10.0MHz typical (sinewave)
■
1Hz
-100dBc/Hz
■
10Hz
-130dBc/Hz
■
100Hz
-145dBc/Hz
■
1kHz
-155dBc/Hz
■
10kHz
-158dBc/Hz
Environmental Specification (non-operating)
■
Storage temperature range -55 to 85°C
■
Shock - 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
■
Nominal Frequency (Fo) in MHz
■
Serial Number (1 letter & 5 numbers )
■
Date Code (4 digits for year and week)
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