Low Noise Oscillator series
LNO 640 D1
OCSO @ 640 MHz
Specific request can be addressed to RAKON
info@rakon.fr
Product Description
LNO 640 D1 is a low noise and low G vibration isolated OCVCSO (Oven
Controlled Voltage Controlled SAW Oscillator) at 640 MHz, phase-
lockable on an external 10 MHz reference.
LNO 640 D1 provides excellent phase noise performance, and is
specially designed for airborne environment. The SAW oscillator is
suspended with vibration and shock absorbers included.
LNO 640 D1 is available in a 70mm x 70mm x 34.75mm package.
Three operating modes are available, through Control Input signal:
Free running
Control Input = Not connected
Voltage controlled Control Input = DC Voltage
Phase Lock Loop
Control Input = 10 MHz Reference
Features
Excellent phase noise performance (typical value) :
o
o
-168 dBc/Hz @ 10kHz offset
-174 dBc/Hz noise floor
Typical phase noise
Free running
PLL mode
BIT Status: Ready or Alarm
Applications
Airborne radars
LNO 640 D1 - Revision D – October 2013
1/5
www.rakon.com
Rakon reserves the right to modify herein specifications and information when necessary
to provide optimum performance and cost
Low Noise Oscillator series
LNO 640 D1
OCSO @ 640 MHz
Specifications
1.0
Line
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
Environmental conditions
Test Condition
Typ. Value
Guaranteed
Unit
°C
°C
-40 to +70
-40 to +85
Half sine 30 g 11 ms
0.02 g²/Hz within [10 to 350Hz]
0.005 g²/Hz within [1 to 2 kHz]
@100Hz vibration frequency, each axis
93 % RH at 60 °C
120 hPa within [-40 to 55 °C]
18 g all directions
5.10
-10
Parameter
Operating temperature range
Storage temperature range
Shock
Random vibration
G sensitivity
Humidity
Low pressure & temperature
Constant acceleration
< 2.10
-9
/g
2.0
Line
2.1
2.2
2.3
2.4
Electrical interface
Test Condition
Pin 2
Pin 1, 50
Pin 4
Pin 3
all phases
-
Typ. Value
Guaranteed
Unit
V
VSWR
V
MHz
+12 ± 0.2
< 1.3:1
+2 to +10
or 10
TTL logic level
Parameter
Supply voltage
Load impedance
Control Input
BIT status
3.0
Line
3.1
Performances
Test Condition
Definition
Control Input not connected
Initial calibration @ 25°C
On full temperature range
After 30 days of continuous operation
st
1 year
10 years
Control Input with DC voltage
At Control Input
Monotone
Positive slope
8
2
+2 to +10
> 6
1.5 to 3
V
ppm
ppm/V
0.2
-
-
-
< 0.5
< 2
< 1
< 6
ppm
ppm
ppm
ppm
Typ. Value
Guaranteed
320
Unit
MHz
Parameter
Nominal frequency
Free running mode
3.2
3.3
3.4
Frequency calibration
Frequency stability
Long term stability
Voltage controlled mode
3.5
3.6
3.7
Tuning voltage
Frequency tuning
Slope
LNO 640 D1 - Revision D – October 2013
2/5
www.rakon.com
Rakon reserves the right to modify herein specifications and information when necessary
to provide optimum performance and cost
Low Noise Oscillator series
LNO 640 D1
OCSO @ 640 MHz
PLL mode
3.8
3.9
3.10
3.11
3.12
3.13
Nominal Control Input frequency
Frequency stability
Input level
Input waveform
Loop bandwidth
Harmonics suppression
All modes
3.14
3.15
3.16
Power consumption
Power consumption
Warm-up time
10MHz harmonics
Common specifications
Warm-up
25 °C (calm air)
1 ppm with reference to frequency
reached after 1 hour of continuous
operation at 25 °C
Sine wave into 50
load
11.5
3.8
-
< 12
< 4.5
<5
W
W
minutes
Control Input with 10MHz reference
Definition
All causes
50 source & load
Square waveform edge
-
15
-100
10
= Reference stability
+10 to +13
> 100
10 to 20
< -60
dBm
mV/ns
Hz
dBc
MHz
3.17
Output power
-
+9 1
dBm
4.0
Line
Single side band phase noise (PN)
Test Condition
Typ. Value
Guaranteed
Unit
Parameter
In static environment (free running mode)
4.1
4.2
4.3
4.4
4.5
PN power density @ 1 kHz offset
PN power density @ 10 kHz offset
PN power density @ 1 MHz offset
Harmonic distortion
Harmonic distortion
Static conditions, at 25°C
(guaranteed values on full temperature
range)
Sub, second and third harmonics
Non-harmonics
-145
-168
-174
-40
< -140
< -164
< -172
< -30
< -80
dBc/Hz
dBc/Hz
dBc/Hz
dBc
dBc
LNO 640 D1 - Revision D – October 2013
3/5
www.rakon.com
Rakon reserves the right to modify herein specifications and information when necessary
to provide optimum performance and cost
Low Noise Oscillator series
LNO 640 D1
OCSO @ 640 MHz
In dynamic environment (free running mode)
4.6
With the following random vibration spectrum (ref. 1.4):
The Single Side Band Phase Noise in dynamic environment is as described below :
5.0
Line
5.1
5.2
5.3
BIT output
Test Condition
Typ. Value
Guaranteed
Unit
Open collector
TTL level
TTL level
Oscillator ready
Alarm
Parameter
Interface
Logic 1
Logic 0
LNO 640 D1 - Revision D – October 2013
4/5
www.rakon.com
Rakon reserves the right to modify herein specifications and information when necessary
to provide optimum performance and cost
Low Noise Oscillator series
LNO 640 D1
OCSO @ 640 MHz
6.0
Mechanical features
Outline in mm
7.0
Line
7.1
7.2
7.3
7.4
Pin description
Pin number
1
2 + lug
3 + lug
4
Name
Frequency output
Supply voltage
BIT status
Control Input
Output signal
Input supply (2) & ground (lug)
Logic output signal (3) & ground (lug)
Tuning DC voltage or 10MHz reference
Description
LNO 640 D1 - Revision D – October 2013
5/5
www.rakon.com
Rakon reserves the right to modify herein specifications and information when necessary
to provide optimum performance and cost
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