OCXO CMOS Output High Performance
Specifications
HCD681
Product
HCD681
Parameters
Frequency range:
5.0 ~ 20.0MHz
Ageing per day (at despatch):
< 1x10
-9
< 5x10
-10
< 2x10
-10
Frequency stability:
< 1x10
-7
per year (option D)
< 2x10
-8
per year (option F)
< 1x10
-9
per 10% change in V
DD
< 5x10
-10
per 10% change in load
Temperature stability:
24.50
(max)
0.50
1.00Ø
40.64
5.60
Option
Codes
D
E
F
< 1x10
-8
< 5x10
-9
< 3x10
-9
R
S
T
C
F
G
Operating temperature range:
-10 to +60°C
-20 to +70°C
-40 to +70°C
Storage temperature range:
-40 to +90°C
4
5
Output waveform:
CMOS / TTL compatible
Frequency adjustment:
±5x10
-7
(typ) over +0.5 to +7.0V
(sufficient for 10 years ageing min)
Stabilised +7.0V supply provided
Supply voltage (V
DD
):+12V
(±0.5V)
+24V (±0.5V)
Other options from 12~30V
N
T
specify
40.64
50.80
3
2
1
Power consumption:
5.0W max at switch on
1.2W typ when stabilised at 25°C
Warm up:
< 1x10
-8
after 8mins at +20°C
50.80
BOTTOM VIEW
PIN
1
2
3
4
5
CONNECTION
Freq adjustment
Ref voltage out
RF output
Ground
Supply
4
2
1
10k multi-turn
1k
VOLTAGE CONTROL
Allan deviation (ADEV), 1 sec:
< 5x10
-13
over 1 sec (5.0MHz)
< 1x10
-12
over 1 sec (10.0MHz)
Close-in phase noise (@ 5.0MHz):
< -110 dBc/Hz @ 1Hz, <-135 @ 10Hz
< -123 dBc/Hz @ 1Hz, <-140 @ 10Hz
< -150 dBc/Hz @ 100Hz
Close-in phase noise (@ 10.0MHz):
< -95 dBc/Hz @ 1Hz, <-130 @ 10Hz
< -108 dBc/Hz @ 1Hz, <-135 @ 10Hz
< -145 dBc/Hz @ 100Hz
Far-out phase noise (all freqs):
< -155 dBc/Hz @ 1kHz
< -157 dBc/Hz @ 10kHz
< -157 dBc/Hz @ 100kHz
Harmonics:
Standard.
< -30dB wrt carrier
Optional - Please specify required code(s) when ordering
Scale 1:1
Z
Features
«
«
«
«
Temperature stability down to 3ppb
Single 12V supply (12V ~ 30V optional)
Standard US footprint & pin-out
“Best
in class” close-in phase noise option
Z
Ordering Information
Part No, or product name + option codes + frequency
eg:
HCD681/FTFN 10.0MHz
Option code X (eg HCD681/X) denotes a custom specification.
Tel:
+44 1460 256 100
05 May 2011
Fax:
+44 1460 256 101
E-mail:
sales@golledge.com
Web:
www.golledge.com
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