OCXO

Space qualified OCXO – Oven Controlled Crystal Oscillator

General Specification (rev1)

December,

5th 2007

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party without obtaining prior written permission from TEMEX.

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Performance characteristics

Electrical Parameters

Unit

Minimum

Typical

Maximum

Frequency output

Nominal frequency range

MHz

30

40

100

Output level (50

Ω

Ω

Ω

Ω load)

dBm

0

8

Harmonics level

dBc

– 25

Spurious (offset > 50 Hz)

dBc

– 80

Phase noise in static conditions @ 100 MHz

@ 1 Hz offset

dBc/Hz

–55

@ 10 Hz offset

dBc/Hz

–85

@ 100 Hz offset

dBc/Hz

– 115

@ 1 kHz offset

dBc/Hz

– 145

@ 10 kHz offset or greater

dBc/Hz

– 155

Allan variance

@ 1s

ppb

0.02

Free running mode (Vctrl pin NC)

Initial setting

ppm

0.25

Stability vs. temperature

ppm

0.2

0.5

Stability vs. 5 % supply voltage variation

ppm

0.01

Stability vs. 10 % load variation

ppm

0.01

Aging over first year

ppm

0.3

Aging over 15 years

ppm

2

Electrical tuning (Vctrl pin)

Relative pulling frequency range

ppm

± 2.5

Input impedance

Ω

Ω

Ω

Ω

10k

Bandwidth

Hz

1k

Linearity

%

20

Supply voltage (Vcc pin)

Voltage range

8.5

9

12.6

Supply power @ 25 °C under vacuum

W

0.65

Supply power @ warm up

W

2

Warm up time

mn

10