ULTRA STABLE OSCILLATOR (USO)

| 10-13 SHORT-TERM STABILITY CLASS OCXO

Issue: A4, 51001807.110, 5 July 2024

Specifications are subject to change without notice

Copyright © 2014 to 2024, Rakon Limited. All rights reserved

Page 2 of 3

Contact Us

1. Environmental Conditions

Parameter

Min.

Typ.

Max.

Unit

Test Condition / Description

Operating temperature

0

25

50

°C

Max. 1 °C/hour

Non-operating temperature

0

25

50

°C

-

Storage temperature

0

-

50

°C

-

Frequency stability after mechanical shocks

-

-

±10

ppb

Half sine 30 g/11 ms

Frequency stability after sine vibrations

-

-

±5

ppb

10 – 500 Hz 10 g acceleration

2. Performance Data

Parameter

Min.

Typ.

Max.

Unit

Test Condition / Description

Nominal frequency (Fn)

-

5, 10

MHz

-

Relative pulling frequency range

±20

-

±50

ppb

With VC tuning from 0 to 10 V

Power supply

Steady state

Warm-up

-

2.4

-

3

10

W

Typical 25°C

Achieving 15 minutes after startup @ 25 °C

Frequency warm-up time

1

-

15

28

mn

day

For frequency in the range Fn ± 1 ppm

For full performance

Frequency stability vs. temperature

-

-

±50

ppt

-

Frequency variation vs. supply

voltage (VCC)

-

-

±10

ppt

Vcc ± 1 % at 25 °C

Frequency variation vs. load

-

-

±20

ppt

For ±10% of load variation

Ageing

-

-

±50

±1.5

±10

±50

ppt/day

ppb/month

ppb/year

ppb/10 years

Afteraminimumof21daysofcontinuousoperation

Ageing according to the MIL-PRF-55310 version C

g-sensitivity

-

-

±1

ppb/g

Quadratic sum

Output level

4

-

6

dBm

Output waveform: Sinewave

Harmonics

-

-

-40

dBc

-

Spurious

-

-

-70

dBc

-

3. Electrical Interface

Parameter

Condition / Remarks

Min.

Typ.

Max.

Unit

Power supply

24 V

12 V (available on request)

22.80

11.40

24

12

25.20

12.60

V

Load impedance

-

47.5

50

52.5

Ω

Reference voltage (VREF)

Output current: 0 to 1 mA max.

-

8

-

-

4. Short-term Stability Options and Phase Noise

ADEV Option

Remarks

Tau=1s Tau= 3s – 30s

Frequency

1Hz

10Hz 100Hz

1kHz

10kHz

08

ADEV = 08E-14

1E-13

8E-14

5 MHz

10 MHz

-130

-123

-150

-141

-157

-143

-160

-143

-160

-143

10

ADEV = 10E-14

1E-13

5 MHz

10 MHz

-128

-121

-148

-141

-155

-143

-160

-143

-160

-143

15

ADEV = 15E-14

1.5E-13

5 MHz

10 MHz

-

-

-

-

-

20

ADEV = 20E-14

2E-13

5 MHz

10 MHz

-

-

-

-

-

25

ADEV = 25E-14

2.5E-13

5 MHz

10 MHz

-

-

-

-

-