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 - Square Wave - 5.0 Volts

DESCRIPTION

OC22T5A series oven-controlled crystal oscillators are close tolerance

OCXOs with good phase noise performance.

Frequency Range 5.0MHz to 20.0MHz

50.8 x 50.8 x 16.0mm 7 pin metal, solder-sealed package

Supply Voltage 5.0 Volts

AT-Cut Crystal

Squarewave Output

·

EFC (Voltage control) as standard

OUTLINE & DIMENSIONS

SPECIFICATION

OCXO - OC22T5A SERIES

Crystal Cut:

AT-cut

Output Waveform:

Square Wave

Supply Voltage:

+5.0 VDC ±0.2V

Frequency Range:

5.0MHz to 20.0MHz

Initial Calibration Tolerance:

Frequency Stability

over 0° to +60°C:

±0.05ppm

over -20° to +70°C:

±0.1ppm

over -40° to +85°C:

±0.2ppm

vs. Voltage Change:

<±1.0ppb for ±5% change

vs. Ageing:

±3.0ppb max per day

±0.5ppm per first year

±3.0ppm over 10 years

vs. Load Change:

<±1.0ppb for ±5% change

Warm-up Time:

1 minutes max. to within

±0.2ppm 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:

2.0W max. steady state

6.0W max. at turn on

Output

Load:

15pF HCMOS

Output Logic HIGH:

+4.5V minimum

Output Logic LOW:

0.5V maximum

Duty Cycle:

50%±10%

Rise/Fall Time:

5ns max (20%~80%)

Frequency dependant

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:

OC22GT5A-10.000-0.10/-20+70

OCXO Package: OC22

RoHS Compliance

G: RoHS Compliant

Blank: Non-compliant

T: Output Squarewave

5: Supply Voltage 5.0Volts

A: AT-Cut Crystal

Nominal Frequency 10.0MHz

Stability in ±ppm

Operating Temperature Range °C

Lowest Temperature/Highest Temperature

Squarewave = 15pF

Sine Wave = 50W

Including probe and fixture