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ROX5252T2

The ROX5252T2 belongs to a range of super single oven OCXOs designed as a compact and smart frequency source and time keeping

reference for all synchronization systems, including precision positioning system bases equipment. These 52 x 52 mm package series of

oscillators are designed with 2 circuits: 1 circuit with the crystal enclosed in a hermetic oven and 1 circuit with the amplifier stage. This

structure enables an excellent stability versus temperature (±0.2 ppb). This high end OCXO is capable of replacing expensive Rubidium clocks

in SDH/SONET Stratum 2 applications.

Standard Specifications

Parameter

Min.

Typ.

Max.

Unit

Test Condition / Description

Nominal frequency

5 - 15

MHz

Standard frequencies: 10, 12.8, 13 and 15 MHz

Operating temperature range

-40

85

°C

Frequency stability over temperature

±0.2

ppb

Free-run accuracy over 20 years

±0.04

ppm

Telcordia GR-1244 requirement is ± 4.6 ppm

Supply voltage stability

±0.05

ppb

±5% at 25°C

24 hours holdover performance

±5

µs

After 3 days of continuous power on, constant

load, no supply change and 50°C window in

operating temperature range, temperature

gradient ( 10 °C / hour)

Hysteresis effect

0.1

ppb

Over -40 to +85°C, gradient 10°C / hour

Long term stability (Ageing)

±0.05

±8

±40

ppb/day

ppb/year

ppb/20 years

After 1 week operation

Short term 1s to 10s integration time

±0.002

ppb

Retrace effect at 25°C

±5

ppb

After 24 hours off and 1hour on

5

V

±5%. Other option 12V

Power consumption

8

3.5

W

W

During warm-up

Steady state at 25°C calm air

Warm-up time

±8

minutes

Within 10 ppb of prior steady state output

frequency at time of power-off. 24 hours on min.

+ 24 hours off max.

Harmonics

-40

dBc

Start-up time

1

sec

Oscillator output - Sinewave

5

9

dBm

Signal level with 50 Ω load

Oscillator output – Compatible CMOS

Rise & fall time

2.4

0.4

5

V

V

ns

Environmental

Vibration

Shocks (3 directions)

Storage temperature

-55

10

50

90

g

g

°C

IEC 68-2-06 test Fc-Severity 500/10

IEC 68–2-27 test Ea severity 50A

Features

Applications

52 x 52

mm

including temperature change

MHz

( GSM,UMTS, CDMA, LTE)