EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk

AT-Cut Crystal - Sine Wave - 12.0 Volts

DESCRIPTION

OC31E12A series oven-controlled crystal oscillators are close

tolerance OCXOs with good phase noise performance.

Frequency Range 10.0MHz to 100.0MHz

36.2 x 27.7 x 16.0mm 5 pin metal, solder-sealed package

Supply Voltage 12.0 Volts

AT-Cut Crystal

Sine Wave Output

·

EFC (Voltage control) as standard

OUTLINE & DIMENSIONS

SPECIFICATION

OCXO - OC31E12A SERIES

Crystal Cut:

AT-cut

Output Waveform:

Sine Wave

Supply Voltage:

+12.0 VDC ±0.5V

Frequency Range:

1.25MHz to 100.0MHz

Initial Calibration Tolerance:

Frequency Stability

over 0° to +60°C:

±0.03ppm

over -20° to +70°C:

±0.08ppm

over -40° to +85°C:

±0.2ppm

vs. Voltage Change:

<±20ppb for ±5% change

vs. Ageing:

±5.0ppb max per day

±0.5ppm per first year

±3.0ppm over 10 years

vs. Load Change:

<±20ppb for ±5% change

Warm-up Time:

3 minutes max. to within

±0.5ppm of nominal freq.

Voltage Control

Control Voltage Centre:

Freq. Deviation Range:

±5.0ppm min., ±20ppm max.

ref. to 25°C and O.T.R.

Control Voltage Range:

2.5V ±2.0Volts

Transfer Function:

Positive: Increasing control

voltage increases output

frequency

Input Impedance:

100k

minimum

EFC Linearity:

±10% maximum

Power Dissipation:

1.2W max. steady state

3.5W max. at turn on

Output

Output Level:

+3dBm typ., +8dBm max.

into 50W load

Harmonics:

-30dBc min.

Spurious:

-75dBc min.

Reference Voltage:

+4.0±0.3VDC or custom

Envionmental

Storage Temperature:

-55° to +125°C

Shock:

2000g, 0.3ms ½ sine

Vibration:

10 ~2000Hz / 10g

Offset

dBc/Hz

1Hz

-75

10Hz

-100

100Hz

-130

1kHz

-140

10kHz

-150

PHASE NOISE (at 10MHz)

TEST CIRCUIT

PART NUMBER FORMAT

Example:

OC31GE12A-10.000-0.08/-20+70

OCXO Package: OC31

RoHS Compliance

G: RoHS Compliant

Blank: Non-compliant

E: Output Sine Wave

12: Supply Voltage 12.0Volts

A: AT-Cut Crystal

Nominal Frequency 10.0MHz

Stability in ±ppm

Operating Temperature Range °C

Lowest Temperature/Highest Temperature

Square wave output load: 15W

Sine Wave output load: 50W